vue表单验证的完整步骤

2019独角兽企业重金招聘Python工程师标准>>>

1、首先在el-form标签加上ref和:rules属性，并且在每个el-form-item标签里定义prop属性，prop属性跟:rules里面的每项对应，如：

<el-form :model = " dialogFormData " label-width = "150px" ref = "dialogFormRef" :rules = " dialogFormRules " >    

    <el-form-item label = "uniqueID" prop = "uniqueID" >

        <el-input v-model = " dialogFormData.uniqueID " placeholder = "" ></el-input>

    </el-form-item>

</el-form>

2、在data里面定义rules属性值

dialogFormRules: {

    uniqueID: [{required: true , message: '必填' }, {validator: MyValid.validSixNum}]

}

3、验证表单

this .$refs[ 'dialogFormRef' ].validate((valid) => {

    在这里判断valid的true或false

}

4、自定义验证方法的例子：

//验证长度为6的全数字

validSixNum (rule, value, callback){

    var valArr = value.split( '' );

    console.log( 'vali six num: ' + valArr.length);

    if(valArr.length != 6){

        return callback(new Error('长度必须是6'));

    }

    var re = new RegExp( "^{6}[0-9]*$" );

    if ( ! re.test(value)){

        return callback( new Error( '必须是纯数字' ));

    }

    callback();

}

转载于:https://my.oschina.net/u/222749/blog/2874531