[improvement] Tab: extract title component (#3634)

packages/coupon-list/test/__snapshots__/index.spec.js.snap

@@ -28,9 +28,9 @@ exports[`render coupon list 1`] = `
   <div class="van-tabs van-tabs--line van-coupon-list__tab">
     <div class="van-tabs__wrap van-hairline--top-bottom">
       <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-        <div class="van-tabs__line"></div>
         <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">可使用优惠券 (6)</span></div>
         <div role="tab" class="van-tab"><span class="van-ellipsis">不可使用优惠券 (2)</span></div>
+        <div class="van-tabs__line"></div>
       </div>
     </div>
     <div class="van-tabs__content">
@@ -153,9 +153,9 @@ exports[`render empty coupon list 1`] = `
   <div class="van-tabs van-tabs--line van-coupon-list__tab">
     <div class="van-tabs__wrap van-hairline--top-bottom">
       <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-        <div class="van-tabs__line"></div>
         <div role="tab" class="van-tab"><span class="van-ellipsis">可使用优惠券 (0)</span></div>
         <div role="tab" class="van-tab van-tab--active" aria-selected="true"><span class="van-ellipsis">不可使用优惠券 (0)</span></div>
+        <div class="van-tabs__line"></div>
       </div>
     </div>
     <div class="van-tabs__content">

packages/index-bar/test/__snapshots__/demo.spec.js.snap

@@ -5,9 +5,9 @@ exports[`renders demo correctly 1`] = `
   <div class="van-tabs van-tabs--line">
     <div class="van-tabs__wrap van-hairline--top-bottom">
       <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-        <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">基础用法</span></div>
         <div role="tab" class="van-tab"><span class="van-ellipsis">自定义索引列表</span></div>
+        <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
       </div>
     </div>
     <div class="van-tabs__content">

packages/list/test/__snapshots__/demo.spec.js.snap

@@ -5,9 +5,9 @@ exports[`renders demo correctly 1`] = `
   <div class="van-tabs van-tabs--line">
     <div class="van-tabs__wrap van-hairline--top-bottom">
       <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-        <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">基础用法</span></div>
         <div role="tab" class="van-tab"><span class="van-ellipsis">错误提示</span></div>
+        <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
       </div>
     </div>
     <div class="van-tabs__content">

packages/tab/test/__snapshots__/demo.spec.js.snap

@@ -6,11 +6,11 @@ exports[`renders demo correctly 1`] = `
     <div class="van-tabs van-tabs--line">
       <div class="van-tabs__wrap van-hairline--top-bottom">
         <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 1</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 2</span></div>
           <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">标签 3</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 4</span></div>
+          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         </div>
       </div>
       <div class="van-tabs__content">
@@ -33,7 +33,6 @@ exports[`renders demo correctly 1`] = `
     <div class="van-tabs van-tabs--line">
       <div class="van-tabs__wrap van-tabs__wrap--scrollable van-hairline--top-bottom">
         <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
           <div role="tab" aria-selected="true" class="van-tab van-tab--active" style="flex-basis: 22%;"><span class="van-ellipsis">标签 1</span></div>
           <div role="tab" class="van-tab" style="flex-basis: 22%;"><span class="van-ellipsis">标签 2</span></div>
           <div role="tab" class="van-tab" style="flex-basis: 22%;"><span class="van-ellipsis">标签 3</span></div>
@@ -42,6 +41,7 @@ exports[`renders demo correctly 1`] = `
           <div role="tab" class="van-tab" style="flex-basis: 22%;"><span class="van-ellipsis">标签 6</span></div>
           <div role="tab" class="van-tab" style="flex-basis: 22%;"><span class="van-ellipsis">标签 7</span></div>
           <div role="tab" class="van-tab" style="flex-basis: 22%;"><span class="van-ellipsis">标签 8</span></div>
+          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         </div>
       </div>
       <div class="van-tabs__content">
@@ -76,10 +76,10 @@ exports[`renders demo correctly 1`] = `
     <div class="van-tabs van-tabs--line">
       <div class="van-tabs__wrap van-hairline--top-bottom">
         <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
           <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">标签 1</span></div>
           <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">标签 2</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 3</span></div>
+          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         </div>
       </div>
       <div class="van-tabs__content">
@@ -121,9 +121,9 @@ exports[`renders demo correctly 1`] = `
     <div class="van-tabs van-tabs--line">
       <div class="van-tabs__wrap van-hairline--top-bottom">
         <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
           <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">标签 1</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 2</span></div>
+          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         </div>
       </div>
       <div class="van-tabs__content">
@@ -140,11 +140,11 @@ exports[`renders demo correctly 1`] = `
     <div class="van-tabs van-tabs--line">
       <div class="van-tabs__wrap van-hairline--top-bottom">
         <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 1</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 2</span></div>
           <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">标签 3</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 4</span></div>
+          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         </div>
       </div>
       <div class="van-tabs__content">
@@ -167,11 +167,11 @@ exports[`renders demo correctly 1`] = `
     <div class="van-tabs van-tabs--line">
       <div class="van-tabs__wrap van-hairline--top-bottom">
         <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
           <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis"><div><i class="van-icon van-icon-more-o"><!----></i>标签 
         </div></span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis"><div><i class="van-icon van-icon-more-o"><!----></i>标签 
         </div></span></div>
+          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         </div>
       </div>
       <div class="van-tabs__content">
@@ -188,11 +188,11 @@ exports[`renders demo correctly 1`] = `
     <div class="van-tabs van-tabs--line">
       <div class="van-tabs__wrap van-hairline--top-bottom">
         <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
           <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">标签 1</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 2</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 3</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 4</span></div>
+          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         </div>
       </div>
       <div class="van-tabs__content van-tabs__content--animated">
@@ -225,11 +225,11 @@ exports[`renders demo correctly 1`] = `
     <div class="van-tabs van-tabs--line">
       <div class="van-tabs__wrap van-hairline--top-bottom">
         <div role="tablist" class="van-tabs__nav van-tabs__nav--line">
-          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 1</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 2</span></div>
           <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">标签 3</span></div>
           <div role="tab" class="van-tab"><span class="van-ellipsis">标签 4</span></div>
+          <div class="van-tabs__line" style="width: 0px; transform: translateX(0px) translateX(-50%);"></div>
         </div>
       </div>
       <div class="van-tabs__content">

packages/tab/test/__snapshots__/index.spec.js.snap

@@ -15,22 +15,21 @@ exports[`change tabs data 1`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
       <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"><div><span>title2</span></div></span>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
     </div>
-    <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane">Text</div>
-  <div role="tabpanel" class="van-tab__pane">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
+      <!---->
-    <!---->
+    </div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
+      <!---->
+    </div>
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    <!---->
-  </div>
-</div>
 </div>
 `;
 
@@ -38,21 +37,20 @@ exports[`change tabs data 2`] = `
 <div class="van-tabs van-tabs--card">
   <div class="van-tabs__wrap">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--card" style="border-color: blue;">
-      <div class="van-tab van-tab--active" style="background-color: blue; border-color: blue;" role="tab" aria-selected="true"><span class="van-ellipsis">new title1</span></div>
+      <div role="tab" aria-selected="true" class="van-tab van-tab--active" style="border-color: blue; background-color: blue;"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab" style="color: blue; border-color: blue;"><span class="van-ellipsis"></span></div>
+      <div role="tab" class="van-tab" style="border-color: blue; color: blue;"><span class="van-ellipsis">title2</span></div>
-      <div role="tab" class="van-tab van-tab--disabled" style="border-color: blue;"><span class="van-ellipsis"><div><span>title2</span></div>title3</span>
+      <div role="tab" class="van-tab van-tab--disabled" style="border-color: blue;"><span class="van-ellipsis">title3</span></div>
     </div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane">Text</div>
-  <div role="tabpanel" class="van-tab__pane">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
+      <!---->
-    <!---->
+    </div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
+      <!---->
+    </div>
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    <!---->
-  </div>
-</div>
 </div>
 `;
 
@@ -60,22 +58,21 @@ exports[`click to switch tab 1`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68); width: 2px; transform: translateX(0px) translateX(-50%);"></div>
       <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"><div><span>title2</span></div></span>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68); width: 2px; transform: translateX(0px) translateX(-50%);"></div>
     </div>
-    <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane" style="">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
+      <!---->
-    <!---->
+    </div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
+      <!---->
+    </div>
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    <!---->
-  </div>
-</div>
 </div>
 `;
 
@@ -83,22 +80,19 @@ exports[`click to switch tab 2`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68); width: 2px; transform: translateX(0px) translateX(-50%); transition-duration: 0.3s;"></div>
       <div role="tab" class="van-tab"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab van-tab--active" aria-selected="true"><span class="van-ellipsis"><div><span>title2</span></div></span>
+      <div role="tab" class="van-tab van-tab--active" aria-selected="true"><span class="van-ellipsis">title2</span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68); width: 2px; transform: translateX(0px) translateX(-50%); transition-duration: 0.3s;"></div>
     </div>
-    <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="">
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    Text
+      <!---->
+    </div>
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    <!---->
-  </div>
-</div>
 </div>
 `;
 
@@ -106,17 +100,16 @@ exports[`lazy render 1`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
       <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"></span></div>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
       <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
     </div>
   </div>
   <div class="van-tabs__content">
     <div role="tabpanel" class="van-tab__pane">Text</div>
     <div role="tabpanel" class="van-tab__pane" style="display: none;">
       <!---->
-      <div><span>title2</span></div>
     </div>
     <div role="tabpanel" class="van-tab__pane" style="display: none;">
       <!---->
@@ -129,37 +122,33 @@ exports[`lazy render 2`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68); width: 2px; transform: translateX(0px) translateX(-50%);"></div>
       <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"><div><span>title2</span></div></span>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68); width: 2px; transform: translateX(0px) translateX(-50%);"></div>
     </div>
-    <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane">Text</div>
-  <div role="tabpanel" class="van-tab__pane">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
-    Text
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
-</div>
 </div>
 `;
 
 exports[`render nav-left & nav-right slot 1`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
-    <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">Nav Left<div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
+    <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">Nav Left<div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"></span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
-      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>Nav Right
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>Nav Right
     </div>
   </div>
   <div class="van-tabs__content">
     <div role="tabpanel" class="van-tab__pane">Text</div>
     <div role="tabpanel" class="van-tab__pane" style="display: none;">
       <!---->
-      <div><span>title2</span></div>
     </div>
     <div role="tabpanel" class="van-tab__pane" style="display: none;">
       <!---->
@@ -172,22 +161,21 @@ exports[`swipe to switch tab 1`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
       <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"><div><span>title2</span></div></span>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
     </div>
-    <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane">Text</div>
-  <div role="tabpanel" class="van-tab__pane">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
+      <!---->
-    <!---->
+    </div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
+      <!---->
+    </div>
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    <!---->
-  </div>
-</div>
 </div>
 `;
 
@@ -195,22 +183,19 @@ exports[`swipe to switch tab 2`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
       <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"><div><span>title2</span></div></span>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
     </div>
-    <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="">
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    Text
+      <!---->
+    </div>
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    <!---->
-  </div>
-</div>
 </div>
 `;
 
@@ -218,22 +203,19 @@ exports[`swipe to switch tab 3`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
       <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"><div><span>title2</span></div></span>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
     </div>
-    <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="">
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    Text
+      <!---->
+    </div>
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    <!---->
-  </div>
-</div>
 </div>
 `;
 
@@ -241,21 +223,18 @@ exports[`swipe to switch tab 4`] = `
 <div class="van-tabs van-tabs--line">
   <div class="van-tabs__wrap van-hairline--top-bottom">
     <div role="tablist" class="van-tabs__nav van-tabs__nav--line" style="border-color: #f44;">
-      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
       <div role="tab" aria-selected="true" class="van-tab van-tab--active"><span class="van-ellipsis">title1</span></div>
-      <div role="tab" class="van-tab"><span class="van-ellipsis"><div><span>title2</span></div></span>
+      <div role="tab" class="van-tab"><span class="van-ellipsis">title2</span></div>
+      <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
+      <div class="van-tabs__line" style="background-color: rgb(255, 68, 68);"></div>
     </div>
-    <div role="tab" class="van-tab van-tab--disabled"><span class="van-ellipsis">title3</span></div>
   </div>
-</div>
+  <div class="van-tabs__content">
-<div class="van-tabs__content">
+    <div role="tabpanel" class="van-tab__pane" style="">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="">Text</div>
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">Text</div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
+    <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    Text
+      <!---->
+    </div>
   </div>
-  <div role="tabpanel" class="van-tab__pane" style="display: none;">
-    <!---->
-  </div>
-</div>
 </div>
 `;

packages/tab/test/index.spec.js

@@ -19,17 +19,13 @@ function createWrapper(options = {}) {
         @change="onChange"
       >
         ${options.extraTemplate || ''}
-        <van-tab :title="title1">Text</van-tab>
+        <van-tab title="title1">Text</van-tab>
-        <van-tab>
+        <van-tab title="title2">Text</van-tab>
-          <span slot="title">title2</span>
-          Text
-        </van-tab>
         <van-tab title="title3" disabled>Text</van-tab>
       </van-tabs>
     `,
     data() {
       return {
-        title1: 'title1',
         color: '#f44',
         type: 'line',
         swipeable: true,
@@ -96,8 +92,7 @@ test('change tabs data', async () => {
     swipeable: false,
     sticky: false,
     type: 'card',
-    color: 'blue',
+    color: 'blue'
-    title1: 'new title1'
   });
 
   await later();

packages/tabs/Title.js

@@ -0,0 +1,82 @@
+import { use } from '../utils';
+
+const bem = use('tab')[1];
+
+export default {
+  props: {
+    type: String,
+    color: String,
+    title: String,
+    active: Boolean,
+    ellipsis: Boolean,
+    disabled: Boolean,
+    scrollable: Boolean,
+    activeColor: String,
+    inactiveColor: String,
+    swipeThreshold: Number
+  },
+
+  computed: {
+    style() {
+      const style = {};
+      const { color, active } = this;
+      const isCard = this.type === 'card';
+
+      // card theme color
+      if (color && isCard) {
+        style.borderColor = color;
+
+        if (!this.disabled) {
+          if (active) {
+            style.backgroundColor = color;
+          } else {
+            style.color = color;
+          }
+        }
+      }
+
+      const titleColor = active ? this.activeColor : this.inactiveColor;
+      if (titleColor) {
+        style.color = titleColor;
+      }
+
+      if (this.scrollable && this.ellipsis) {
+        style.flexBasis = `${88 / this.swipeThreshold}%`;
+      }
+
+      return style;
+    }
+  },
+
+  methods: {
+    onClick() {
+      this.$emit('click');
+    },
+
+    renderTitle(el) {
+      const { title } = this.$refs;
+      title.innerHTML = '';
+      title.appendChild(el);
+    }
+  },
+
+  render(h) {
+    return (
+      <div
+        role="tab"
+        aria-selected={this.active}
+        class={bem({
+          active: this.active,
+          disabled: this.disabled,
+          complete: !this.ellipsis
+        })}
+        style={this.style}
+        onClick={this.onClick}
+      >
+        <span ref="title" class={{ 'van-ellipsis': this.ellipsis }}>
+          {this.title}
+        </span>
+      </div>
+    );
+  }
+};

packages/tabs/index.js

@@ -10,9 +10,9 @@ import {
   getElementTop,
   getScrollEventTarget
 } from '../utils/dom/scroll';
+import Title from './Title';
 
 const [sfc, bem] = use('tabs');
-const tabBem = use('tab')[1];
 
 export default sfc({
   mixins: [
@@ -225,16 +225,16 @@ export default sfc({
       const shouldAnimate = this.inited;
 
       this.$nextTick(() => {
-        const { tabs } = this.$refs;
+        const { titles } = this.$refs;
 
-        if (!tabs || !tabs[this.curActive] || this.type !== 'line') {
+        if (!titles || !titles[this.curActive] || this.type !== 'line') {
           return;
         }
 
-        const tab = tabs[this.curActive];
+        const title = titles[this.curActive].$el;
         const { lineWidth, lineHeight } = this;
-        const width = isDef(lineWidth) ? lineWidth : tab.offsetWidth / 2;
+        const width = isDef(lineWidth) ? lineWidth : title.offsetWidth / 2;
-        const left = tab.offsetLeft + tab.offsetWidth / 2;
+        const left = title.offsetLeft + title.offsetWidth / 2;
 
         const lineStyle = {
           width: suffixPx(width),
@@ -301,15 +301,15 @@ export default sfc({
 
     // scroll active tab into view
     scrollIntoView(immediate) {
-      const { tabs } = this.$refs;
+      const { titles } = this.$refs;
 
-      if (!this.scrollable || !tabs || !tabs[this.curActive]) {
+      if (!this.scrollable || !titles || !titles[this.curActive]) {
         return;
       }
 
       const { nav } = this.$refs;
-      const active = tabs[this.curActive];
+      const title = titles[this.curActive].$el;
-      const to = active.offsetLeft - (nav.offsetWidth - active.offsetWidth) / 2;
+      const to = title.offsetLeft - (nav.offsetWidth - title.offsetWidth) / 2;
 
       scrollLeftTo(nav, to, immediate ? 0 : this.duration);
     },
@@ -317,67 +317,32 @@ export default sfc({
     // render title slot of child tab
     renderTitle(el, index) {
       this.$nextTick(() => {
-        const title = this.$refs.title[index];
+        this.$refs.titles[index].renderTitle(el);
-        title.innerHTML = '';
-        title.appendChild(el);
       });
-    },
-
-    getTabStyle(item, index) {
-      const style = {};
-      const { color } = this;
-      const active = index === this.curActive;
-      const isCard = this.type === 'card';
-
-      // theme color
-      if (color) {
-        if (!item.disabled && isCard && !active) {
-          style.color = color;
-        }
-        if (!item.disabled && isCard && active) {
-          style.backgroundColor = color;
-        }
-        if (isCard) {
-          style.borderColor = color;
-        }
-      }
-
-      const titleColor = active ? this.titleActiveColor : this.titleInactiveColor;
-      if (titleColor) {
-        style.color = titleColor;
-      }
-
-      if (this.scrollable && this.ellipsis) {
-        style.flexBasis = 88 / this.swipeThreshold + '%';
-      }
-
-      return style;
     }
   },
 
   render(h) {
     const { type, ellipsis, animated, scrollable } = this;
 
-    const Nav = this.children.map((tab, index) => (
+    const Nav = this.children.map((item, index) => (
-      <div
+      <Title
-        ref="tabs"
+        ref="titles"
         refInFor
-        role="tab"
+        type={type}
-        aria-selected={index === this.curActive}
+        title={item.title}
-        class={tabBem({
+        color={this.color}
-          active: index === this.curActive,
+        active={index === this.curActive}
-          disabled: tab.disabled,
+        ellipsis={ellipsis}
-          complete: !ellipsis
+        disabled={item.disabled}
-        })}
+        scrollable={scrollable}
-        style={this.getTabStyle(tab, index)}
+        activeColor={this.titleActiveColor}
+        inactiveColor={this.titleInactiveColor}
+        swipeThreshold={this.swipeThreshold}
         onClick={() => {
           this.onClick(index);
         }}
-      >
+      />
-        <span ref="title" refInFor class={{ 'van-ellipsis': ellipsis }}>
-          {tab.title}
-        </span>
-      </div>
     ));
 
     let contentListeners;
@@ -402,8 +367,8 @@ export default sfc({
         >
           <div ref="nav" role="tablist" class={bem('nav', [type])} style={this.navStyle}>
             {this.slots('nav-left')}
-            {type === 'line' && <div class={bem('line')} style={this.lineStyle} />}
             {Nav}
+            {type === 'line' && <div class={bem('line')} style={this.lineStyle} />}
             {this.slots('nav-right')}
           </div>
         </div>