quill工具栏出现提示的功能

 <script scoped>
         // 标题
       const titleConfig=[
            {Choice:'.ql-bold',title:'加粗'},
            {Choice:'.ql-italic',title:'斜体'},
            {Choice:'.ql-underline',title:'下划线'},
            {Choice:'.ql-header',title:'段落格式'},
            {Choice:'.ql-strike',title:'删除线'},
            {Choice:'.ql-blockquote',title:'块引用'},
            {Choice:'.ql-code',title:'插入代码'},
            {Choice:'.ql-code-block',title:'插入代码段'},
            {Choice:'.ql-font',title:'字体'},
            {Choice:'.ql-size',title:'字体大小'},
            {Choice:'.ql-list[value="ordered"]',title:'编号列表'},
            {Choice:'.ql-list[value="bullet"]',title:'项目列表'},
            {Choice:'.ql-direction',title:'文本方向'},
            {Choice:'.ql-header[value="1"]',title:'h1'},
            {Choice:'.ql-header[value="2"]',title:'h2'},
            {Choice:'.ql-align',title:'对齐方式'},
            {Choice:'.ql-color',title:'字体颜色'},
            {Choice:'.ql-background',title:'背景颜色'},
            {Choice:'.ql-image',title:'图像'},
            {Choice:'.ql-video',title:'视频'},
            {Choice:'.ql-link',title:'添加链接'},
            {Choice:'.ql-formula',title:'插入公式'},
            {Choice:'.ql-clean',title:'清除字体格式'},
            {Choice:'.ql-script[value="sub"]',title:'下标'},
            {Choice:'.ql-script[value="super"]',title:'上标'},
            {Choice:'.ql-indent[value="-1"]',title:'向左缩进'},
            {Choice:'.ql-indent[value="+1"]',title:'向右缩进'},
            {Choice:'.ql-header .ql-picker-label',title:'标题大小'},
            {Choice:'.ql-header .ql-picker-item[data-value="1"]',title:'标题一'},
            {Choice:'.ql-header .ql-picker-item[data-value="2"]',title:'标题二'},
            {Choice:'.ql-header .ql-picker-item[data-value="3"]',title:'标题三'},
            {Choice:'.ql-header .ql-picker-item[data-value="4"]',title:'标题四'},
            {Choice:'.ql-header .ql-picker-item[data-value="5"]',title:'标题五'},
            {Choice:'.ql-header .ql-picker-item[data-value="6"]',title:'标题六'},
            {Choice:'.ql-header .ql-picker-item:last-child',title:'标准'},
            {Choice:'.ql-size .ql-picker-item[data-value="small"]',title:'小号'},
            {Choice:'.ql-size .ql-picker-item[data-value="large"]',title:'大号'},
            {Choice:'.ql-size .ql-picker-item[data-value="huge"]',title:'超大号'},
            {Choice:'.ql-size .ql-picker-item:nth-child(2)',title:'标准'},
            {Choice:'.ql-align .ql-picker-item:first-child',title:'居左对齐'},
            {Choice:'.ql-align .ql-picker-item[data-value="center"]',title:'居中对齐'},
            {Choice:'.ql-align .ql-picker-item[data-value="right"]',title:'居右对齐'},
            {Choice:'.ql-align .ql-picker-item[data-value="justify"]',title:'两端对齐'}
        ];
        export default {
          data() {
              return{}
          }
         mounted() {
             autotip:{
                  document.getElementsByClassName('ql-editor')[0].dataset.placeholder=''
                  for(let item of titleConfig){
                      let tip = document.querySelector('.quill-editor '+ item.Choice)
                      if (!tip) continue
                      tip.setAttribute('title',item.title)
                  }
              }
          },
        }
    </script>

 注意：let tip = document.querySelector('.quill-editor '+ item.Choice)这一行中的‘.quill-editor ’引号里后面有一个空格，如果把空格删掉，这段代码就不生效了。