element-ui的form表单自定义校验时星号(*)丢失后添加星号

1. 向 el-form-item 元素添加类名 show_start

<el-form-item label="xxx" prop="xxx" class="show_start "></el-form-item>

2. css样式中添加如下代码即可

.show_start {
  position: relative;
  .el-form-item__label:before {
    content: "*";
    color: #f56c6c;
    margin-right: 4px;
  }
}