🐛 fix #216

Vanessa219 · Mar 11, 2020 · 4046c63 · 4046c63
1 parent b5e8692
commit 4046c63
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diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -49,6 +49,10 @@
 
 * [open issues](https://github.com/Vanessa219/vditor/issues)
 
+### v2.3.0 / 未发布
+
+* [216](https://github.com/Vanessa219/vditor/issues/216) subtoolbar 向下溢出 `修复缺陷`
+
 ### v2.2.19 / 2020-03-10
 
 * [214](https://github.com/Vanessa219/vditor/issues/214) wysiwyg heading id `引入特性`

diff --git a/src/ts/wysiwyg/index.ts b/src/ts/wysiwyg/index.ts
@@ -151,8 +151,8 @@ class WYSIWYG {
             if (this.popover.style.display !== "block") {
                 return;
             }
-            this.popover.style.top = Math.max(-11,
-                parseInt(this.popover.getAttribute("data-top"), 10) - vditor.wysiwyg.element.scrollTop) + "px";
+            const top = parseInt(this.popover.getAttribute("data-top"), 10) - vditor.wysiwyg.element.scrollTop;
+            this.popover.style.top = Math.max(-11, Math.min(top, this.element.clientHeight - 21)) + "px";
         });
 
         this.element.addEventListener("copy", (event: ClipboardEvent & { target: HTMLElement }) => {