vue 表单数据验证 vue实现表单数据验证的实例代码
Maple_feng 人气:0- 为el-form表单添加:rules
- 在data中定义规则
- 将定义的规则绑定在el-form-item
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
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