From c95d59e303190a54c57d76453356e8fb3fcbf578 Mon Sep 17 00:00:00 2001
From: inottn <inottn@outlook.com>
Date: Mon, 31 Jul 2023 21:34:41 +0800
Subject: [PATCH] fix(TextEllipsis): fix the logic of calculating the position
 of ellipsis (#12137)

---
 packages/vant/src/text-ellipsis/TextEllipsis.tsx | 15 +++++++--------
 1 file changed, 7 insertions(+), 8 deletions(-)

diff --git a/packages/vant/src/text-ellipsis/TextEllipsis.tsx b/packages/vant/src/text-ellipsis/TextEllipsis.tsx
index c0c05ffe2..da253b3ba 100644
--- a/packages/vant/src/text-ellipsis/TextEllipsis.tsx
+++ b/packages/vant/src/text-ellipsis/TextEllipsis.tsx
@@ -40,7 +40,7 @@ export default defineComponent({
     const root = ref<HTMLElement>();
 
     const actionText = computed(() =>
-      expanded.value ? props.expandText : props.collapseText,
+      expanded.value ? props.collapseText : props.expandText,
     );
 
     const pxToNum = (value: string | null) => {
@@ -89,7 +89,7 @@ export default defineComponent({
               return dots + content.slice(right, end);
             }
 
-            const middle = Math.round((left + right) >> 1);
+            const middle = Math.round((left + right) / 2);
 
             // Set the interception location
             if (position === 'end') {
@@ -127,21 +127,20 @@ export default defineComponent({
             rightPart[1] - rightPart[0] <= 1
           ) {
             return (
-              content.slice(0, leftPart[1]) +
+              content.slice(0, leftPart[0]) +
               dots +
               content.slice(rightPart[1], end)
             );
           }
 
-          const leftMiddle = Math.floor((leftPart[0] + leftPart[1]) >> 1);
-          const rightMiddle = Math.ceil((rightPart[0] + rightPart[1]) >> 1);
+          const leftMiddle = Math.floor((leftPart[0] + leftPart[1]) / 2);
+          const rightMiddle = Math.ceil((rightPart[0] + rightPart[1]) / 2);
 
           container.innerText =
             props.content.slice(0, leftMiddle) +
             props.dots +
-            actionText.value +
-            props.dots +
-            props.content.slice(rightMiddle, end);
+            props.content.slice(rightMiddle, end) +
+            props.expandText;
 
           if (container.offsetHeight >= maxHeight) {
             return middleTail(