docs(changelog): 2.12.39

docs/markdown/changelog.en-US.md

@@ -16,6 +16,17 @@ Vant follows [Semantic Versioning 2.0.0](https://semver.org/lang/zh-CN/).
 
 ## Details
 
+### [v2.12.39](https://github.com/youzan/vant/compare/v2.12.38...v2.12.39)
+
+`2022-01-15`
+
+**Bug Fixes**
+
+- DatetimePicker: error in some edge cases [#10186](https://github.com/youzan/vant/issues/10186)
+- ImagePreview: incorrectly closed after zooming [#10191](https://github.com/youzan/vant/issues/10191)
+- NavBar: get correct height in mobile safari [#10190](https://github.com/youzan/vant/issues/10190)
+- Tabbar: get correct height in mobile safari [#10185](https://github.com/youzan/vant/issues/10185)
+
 ### [v2.12.38](https://github.com/youzan/vant/compare/v2.12.37...v2.12.38)
 
 `2022-01-10`

docs/markdown/changelog.zh-CN.md

@@ -16,6 +16,17 @@ Vant 遵循 [Semver](https://semver.org/lang/zh-CN/) 语义化版本规范。
 
 ## 更新内容
 
+### [v2.12.39](https://github.com/youzan/vant/compare/v2.12.38...v2.12.39)
+
+`2022-01-15`
+
+**Bug Fixes**
+
+- DatetimePicker: 修复边界情况下可能报错的问题 [#10186](https://github.com/youzan/vant/issues/10186)
+- ImagePreview: 修复快速缩放导致预览关闭的问题 [#10191](https://github.com/youzan/vant/issues/10191)
+- NavBar: 修复在 safari 上占位元素高度错误的问题 [#10190](https://github.com/youzan/vant/issues/10190)
+- Tabbar: 修复在 safari 上占位元素高度错误的问题 [#10185](https://github.com/youzan/vant/issues/10185)
+
 ### [v2.12.38](https://github.com/youzan/vant/compare/v2.12.37...v2.12.38)
 
 `2022-01-10`

package.json

@@ -1,6 +1,6 @@
 {
   "name": "vant",
-  "version": "2.12.38",
+  "version": "2.12.39",
   "description": "Mobile UI Components built on Vue",
   "main": "lib/index.js",
   "module": "es/index.js",

src/image-preview/ImagePreviewItem.js

@@ -139,11 +139,12 @@ export default {
       this.touchStart(event);
       this.touchStartTime = new Date();
 
+      this.fingerNum = touches.length;
       this.startMoveX = this.moveX;
       this.startMoveY = this.moveY;
 
-      this.moving = touches.length === 1 && this.scale !== 1;
-      this.zooming = touches.length === 2 && !offsetX;
+      this.moving = this.fingerNum === 1 && this.scale !== 1;
+      this.zooming = this.fingerNum === 2 && !offsetX;
 
       if (this.zooming) {
         this.startScale = this.scale;
@@ -216,10 +217,14 @@ export default {
     },
 
     checkTap() {
+      if (this.fingerNum > 1) {
+        return;
+      }
+
       const { offsetX = 0, offsetY = 0 } = this;
       const deltaTime = new Date() - this.touchStartTime;
       const TAP_TIME = 250;
-      const TAP_OFFSET = 10;
+      const TAP_OFFSET = 5;
 
       if (
         offsetX < TAP_OFFSET &&

src/nav-bar/index.js

@@ -31,7 +31,13 @@ export default createComponent({
 
   mounted() {
     if (this.placeholder && this.fixed) {
-      this.height = this.$refs.navBar.getBoundingClientRect().height;
+      const setHeight = () => {
+        this.height = this.$refs.navBar.getBoundingClientRect().height;
+      };
+
+      setHeight();
+      // https://github.com/youzan/vant/issues/10131
+      setTimeout(setHeight, 100);
     }
   },