update: 添加变量

src/views/message/addTemp.vue

@@ -432,7 +432,7 @@ export default {
     },
     // 向短信内容中插入模板变量
     addVar(key, val) {
-      const curPos = this.$refs['textarea'].$el.firstChild.firstChild.selectionStart;
+      const curPos = this.$refs['textarea'].$el.children[0].selectionStart;
       let curContent = this.form.content;
       this.form.content = curContent.slice(0, curPos) + `{${key}}` + curContent.slice(curPos, curContent.length);
       this.templateVisbile = false;