时间：2021-05-03 10:02:56 | 栏目：Tomcat | 点击：次
代码如下：
<!--登录表单区域-->
<el-form :model="loginForm" label-width="0px" class="login_form" :rules="loginFormRules">
<!--用户名-->
<el-form-item prop="username">
<el-input v-model="loginForm.username" prefix-icon="el-icon-user"></el-input>
</el-form-item>
<!--密码-->
<el-form-item prop="password">
<el-input v-model="loginForm.password" prefix-icon="el-icon-lock" type="password"></el-input>
</el-form-item>
<!--按钮区域-->
<el-form-item class="btns">
<el-button type="primary">登录</el-button>
<el-button type="info">重置</el-button>
</el-form-item>
</el-form>
<script>
export default{
data(){
return {
//登录表单数据绑定对象
loginForm:{
username:'',
password:''
},
//表单验证规则
loginFormRules:{
//验证用户名是否合法
username:[
{ required: true, message: '请输入用户名', trigger: 'blur' },
{ min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }
],
//验证密码是否合法
password:[
{ required: true, message: '请输入密码', trigger: 'blur' },
{ min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }
]
}
}
}
}
</script>
PS：下面看下vue 自定义指令input表单的数据验证的代码
一、代码
<template>
<div class="check" >
<h3>{{msg}}</h3>
<div class="input">
<input type="text" v-input v-focus><span>{{msg1}}</span>
</div>
<div class="input">
<input type="text" v-input v-required><span>{{msg2}}</span>
</div>
<div class="input">
<!-- required：true/false 表示这个是必填项 -->
<input type="text" v-input v-checked="{required:true,}"><span>{{msg3}}</span>
</div>
<div class="input">
<!-- <input type="text" v-input v-validate="'required|email|phone|min(5)|max(15)|minlength(6)|maxlength(12)|regex(/^[0-9]*$/)'">
required 验证是否是必填项
email 验证是否是邮箱
phone 验证是否是电话号码
min(5) 验证最小值
max(3) 验证最大值
minlength(6) 验证最小长度
maxlength(12) 验证最大长度
regex(/^[0-9]*$/) 进行正则验证
-->
<input type="text" v-input
v-validate="'required|min(5)|max(15)|minlength(6)|maxlength(12)|regex(/^[0-9]*$/)'" placeholder="多选验证">
</div>
<div class="input">
<!--
验证必须是数字：/^[0-9]*$/
验证由26个英文字母组成的字符串：/^[A-Za-z]+$/
验证手机号： /^[1][3,4,5,7,8][0-9]{9}$/;
验证邮箱：/^(\w-*\.*)+@(\w-?)+(\.\w{2,})+$/;
-->
<input type="text" v-input v-validate="'required|phone'" placeholder="验证手机号码">
</div>
<div class="input">
<input type="text" v-input v-validate="'required|email'" placeholder="验证邮箱">
</div>
</div>
</template>
<script>
export default {
name: 'check',
data() {
return {
msg: '指令',
tipsBorderColor: 'red',
msg1: '最简单的指令',
msg2: '验证不能为空的指令',
msg3: '进行正则验证',
tipsMsg: '',
}
},
directives: {
// 修饰input框的指令
input: {
// 当被绑定的元素插入到DOM上的时候
inserted: function (el) {
el.style.width = "300px";
el.style.height = "35px";
el.style.lineHeight = "35px";
el.style.background = "#ddd";
el.style.fontSize = "16px";
el.style.border = "1px solid #eee";
el.style.textIndent = "5px";
el.style.textIndent = "8px";
el.style.borderRadius = "5px";
}
},
// input框默认选中的指令
focus: {
inserted: function (el) {
el.focus();
}
},
// 不能为空的指令
required: {
inserted: function (el) {
el.addEventListener('blur', function () {
if (el.value == '' || el.value == null) {
el.style.border = "1px solid red";
console.log('我不能为空');
}
})
}
},
// 验证指令
checked: {
inserted: function (el) {
return el
}
},
// 验证
validate: {
inserted: function (el, validateStr) {
// 将验证规则拆分为验证数组
let validateRuleArr = validateStr.value.split("|");
// 监听失去焦点的时候
el.addEventListener('blur', function () {
//失去焦点进行验证
checkedfun();
});
// 循环进行验证
function checkedfun() {
for (var i = 0; i < validateRuleArr.length; ++i) {
let requiredRegex = /^required$/; // 判断设置了required
let emailRegex = /^email$/; // 判断设置了email
let phoneRegex = /^phone$/; // 判断设置了 phone
let minRegex = /min\(/; //判断设置了min 最小值
let maxRegex = /max\(/; //判断设置了max 最大值
let minlengthRegex = /minlength\(/; //判断设置了 minlength 最大长度
let maxlengthRegex = /maxlength\(/; //判断设置了 maxlength 最大长度
let regexRegex = /regex\(/;
// 判断设置了required
if (requiredRegex.test(validateRuleArr[i])) {
if (!required()) {
break;
} else {
removeTips();
}
}
// 判断设置了email
if (emailRegex.test(validateRuleArr[i])) {
if (!email()) {
break;
} else {
removeTips();
}
}
// 判断设置了 phone
if (phoneRegex.test(validateRuleArr[i])) {
if (!phone()) {
break;
} else {
removeTips();
}
}
// 判断是否设置了最小值
if (minRegex.test(validateRuleArr[i])) {
if (!eval(validateRuleArr[i])) {
break;
} else {
removeTips();
}
}
// 判断是否设置了最大值
if (maxRegex.test(validateRuleArr[i])) {
if (!eval(validateRuleArr[i])) {
break;
} else {
removeTips();
}
}
// 判断设置了最小长度
if (minlengthRegex.test(validateRuleArr[i])) {
if (!eval(validateRuleArr[i])) {
break;
} else {
removeTips();
}
}
// 判断设置了最大长度
if (maxlengthRegex.test(validateRuleArr[i])) {
if (!eval(validateRuleArr[i])) {
break;
} else {
removeTips();
}
}
// 判断测试正则表达式
if (regexRegex.test(validateRuleArr[i])) {
if (!eval(validateRuleArr[i])) {
break;
} else {
removeTips();
}
}
}
}
// 验证是否是必填项
function required() {
if (el.value == '' || el.value == null) {
// console.log("不能为空");
tipMsg("不能为空");
return false;
}
return true;
}
// 验证是否是邮箱
function email() {
let emailRule = /^(\w-*\.*)+@(\w-?)+(\.\w{2,})+$/;
if (!emailRule.test(el.value)) {
tipMsg("请输入正确的邮箱地址");
return false;
}
return true;
}
// 验证是否是手机号码
function phone() {
let phoneRule = /^[1][3,4,5,7,8][0-9]{9}$/;
if (!phoneRule.test(el.value)) {
tipMsg("请输入正确的手机号码");
return false;
}
return true;
}
// 最小值验证
function min(num) {
if (el.value < num) {
tipMsg("最小值不能小于" + num);
//console.log('最小值不能小于'+num);
return false;
}
return true;
}
// 最大值验证
function max(num) {
if (el.value > num) {
tipMsg("最大值不能大于" + num);
//console.log('最大值不能大于'+num);
return false;
}
return true;
}
// 最小长度验证
function minlength(length) {
if (el.value.length < length) {
//console.log('最小长度不能小于'+length);
tipMsg("最小长度不能小于" + length);
return false;
}
return true;
}
// 最大长度进行验证
function maxlength(length) {
if (el.value.length > length) {
//console.log('最大长度不能大于'+length);
tipMsg("最大长度不能大于" + length);
return false;
}
return true;
}
// 进行正则表达式的验证
function regex(rules) {
if (!rules.test(el.value)) {
tipMsg("请输入正确的格式");
return false;
}
return true;
}
// 添加提示信息
function tipMsg(msg) {
removeTips();
let tipsDiv = document.createElement('div');
let curDate = Date.parse(new Date());
tipsDiv.innerText = msg;
tipsDiv.className = "tipsDiv";
tipsDiv.id = curDate;
tipsDiv.style.position = "absolute";
tipsDiv.style.top = el.offsetTop + 45 + 'px';
tipsDiv.style.left = el.offsetLeft + 'px';
document.body.appendChild(tipsDiv);
//setTimeout(function(){
// document.getElementById(curDate).remove();
//},2000);
}
// 移除提示信息
function removeTips() {
if (document.getElementsByClassName('tipsDiv')[0]) {
document.getElementsByClassName('tipsDiv')[0].remove();
}
}
},
}
}
}
</script>
<style>
.input {
padding-bottom: 20px;
float: left;
clear: both;
margin-left: 500px;
display: block;
}
.check input {
width: 300px;
height: 35px;
outline: none;
background: #ddd;
}
.check span {
padding-left: 20px;
}
.tipsDiv {
height: 27px;
line-height: 25px;
border: 1px solid #333;
background: #333;
padding: 0px 5px;
border-radius: 4px;
color: #fff;
font-size: 16px;
}
.tipsDiv:before {
content: '';
display: block;
border-width: 0 5px 8px;
border-style: solid;
border-color: transparent transparent #000;
position: absolute;
top: -9px;
left: 6px;
}
</style>
总结