ElementUI日期组件(DatePicker )图标定制

template修改：
<el-date-picker
        v-model="value12"
        @change="selectTime"
        type="datetimerange"
        range-separator=""  //这里设置为空字符串
        start-placeholder="开始日期"
        end-placeholder="结束日期"
        />
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style样式新增：--隐藏左侧的图标
::v-deep .el-range__icon {
  display: none;
}
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mounted生命周期新增：
mounted () {
    //el-icon-right向右的箭头--可以根据需要换成别的
    document.getElementsByClassName('el-range__close-icon')[0].className += ' el-icon-date' 
    document.getElementsByClassName('el-range-separator')[0].className += ' el-icon-right' 
  }