elementUi的el-form表单el-form-item验证规则里prop一次验证两个或多个值

//1.prop中是第一个要验证的值
<el-form-item label="期望薪资" prop="lowSalary">
    <el-select v-model="jobExpectations.lowSalary" placeholder="请选择" class="thirty-seven-percent">
        <el-option
                value="999K">
        </el-option>
    </el-select>
    至
    <el-select v-model="jobExpectations.heightSalary" placeholder="请选择" class="thirty-seven-percent">
        <el-option
                value="9999K">
        </el-option>
    </el-select>
</el-form-item>
//2.在验证规则中添加validator验证规则

lowSalary: [
    {required: true, validator:customDefinition, message: '请选择薪资', trigger: 'change'},
],

//3.在data中定义customDefinition的判断条件

data() {
    const customDefinition = (rule,value,callback)=>{

        if(value===""||value===null) {
            callback(new Error('请选择日期'))
        }else if(this.jobExpectations.heightSalary===""||this.jobExpectations.heightSalary===null){
            callback(new Error())
        }else{
            callback()
        }
    }
    return {}
}