智能研报文本编辑撤回内容时内容未更新bug修复

src/views/smartReport/components/TextEdit.vue

@@ -90,18 +90,22 @@ export default {
                     keyup: function (e, editor) {
                         //添加事件，在每次按键按下时，都记录一下最后停留位置
                         that.$nextTick(function () {
-                            that.lastEditRange = getSelection().getRangeAt(0);
+                            getSelection().rangeCount &&
+                                (that.lastEditRange = getSelection().getRangeAt(0));
                         });
                     },
                     click: function (e, editor) {
                         //添加事件，在每次鼠标点击时，都记录一下最后停留位置
                         that.$nextTick(function () {
-                            that.lastEditRange = getSelection().getRangeAt(0);
+                            getSelection().rangeCount &&
+                            (that.lastEditRange = getSelection().getRangeAt(0));
                         });
                     },
                     //内容改变事件
                     contentChanged: function () {
-                        that.lastEditRange = getSelection().getRangeAt(0) || 0;
+                        that.lastEditRange = getSelection().rangeCount
+                            ? getSelection().getRangeAt(0)
+                            : 0;
                         
                         // that.$emit('textChange', that.html)
                         that.sendHtml()