div设置contenteditable="true" 设置pl

<div  ref="myRef"

      v-html="xssFilter(text.content)"

      class="publish_content"

      id="publish_content"

      contenteditable="true"

      :placeholder="placeholder"

      @input="contentChange"

    ></div>

//  输入框获取光标 placehodlder消失

/*为空时显示 element attribute content*/

  .publish_content:empty:before{

    content: attr(placeholder);   /* element attribute*/

    /*content: 'this is content';*/

    color: #C0C4CC;

  }

// 注释掉这个输入框输入值后placehodler消失

  /*焦点时内容为空*/

  .publish_content:focus:before{

    content:none;

  }