vue.js怎么实现验证码
4638
vue实现验证码的方法:1、创建js组件;2、引入组件;3、定义验证对象;4、初始化节点;5、通过validate()方法验证输入的是否正确即可。
Vue实现验证码功能,具体内容如下
1、效果
2、代码
2.1 创建js组件
内容(可直接粘贴过去,需要改宽度和高度,修改_init方法中的宽和高)
- function GVerify (options) { // 创建一个图形验证码对象,接收options对象为参数
- this.options = { // 默认options参数值
- id: '', // 容器Id
- canvasId: 'verifyCanvas', // canvas的ID
- width: '80', // 默认canvas宽度
- height: '30', // 默认canvas高度
- type: 'number', // 图形验证码默认类型blend:数字字母混合类型、number:纯数字、letter:纯字母
- code: ''
- }
- if (Object.prototype.toString.call(options) === '[object Object]') { // 判断传入参数类型
- for (var i in options) { // 根据传入的参数,修改默认参数值
- this.options[i] = options[i]
- }
- } else {
- this.options.id = options
- }
- this.options.numArr = '0,1,2,3,4,5,6,7,8,9'.split(',')
- this.options.letterArr = getAllLetter()
- this._init()
- this.refresh()
- }
- GVerify.prototype = {
- /** 版本号**/
- version: '1.0.0',
- /** 初始化方法**/
- _init: function () {
- var con = document.getElementById(this.options.id)
- var canvas = document.createElement('canvas')
- // this.options.width = con.offsetWidth > 0 ? con.offsetWidth : '30'
- // this.options.height = con.offsetHeight > 0 ? con.offsetHeight : '30'
- this.options.width = '160'
- this.options.height = '50'
- canvas.id = this.options.canvasId
- canvas.width = this.options.width
- canvas.height = this.options.height
- canvas.style.cursor = 'pointer'
- canvas.innerHTML = '您的浏览器版本不支持canvas'
- con.appendChild(canvas)
- var parent = this
- canvas.onclick = function () {
- parent.refresh()
- }
- },
- /** 生成验证码**/
- refresh: function () {
- var canvas = document.getElementById(this.options.canvasId)
- if (canvas.getContext) {
- var ctx = canvas.getContext('2d')
- }
- ctx.textBaseline = 'middle'
- ctx.fillStyle = randomColor(180, 240)
- ctx.fillRect(0, 0, this.options.width, this.options.height)
- if (this.options.type === 'blend') { // 判断验证码类型
- var txtArr = this.options.numArr.concat(this.options.letterArr)
- } else if (this.options.type === 'number') {
- var txtArr = this.options.numArr
- } else {
- var txtArr = this.options.letterArr
- }
- for (var i = 1; i <= 4; i++) {
- var txt = txtArr[randomNum(0, txtArr.length)]
- this.options.code += txt
- ctx.font = randomNum(this.options.height / 2, this.options.height) + 'px SimHei' // 随机生成字体大小
- ctx.fillStyle = randomColor(50, 160) // 随机生成字体颜色
- ctx.shadowOffsetX = randomNum(-3, 3)
- ctx.shadowOffsetY = randomNum(-3, 3)
- ctx.shadowBlur = randomNum(-3, 3)
- ctx.shadowColor = 'rgba(0, 0, 0, 0.3)'
- var x = this.options.width / 5 * i
- var y = this.options.height / 2
- var deg = randomNum(-30, 30)
- /** 设置旋转角度和坐标原点**/
- ctx.translate(x, y)
- ctx.rotate(deg * Math.PI / 180)
- ctx.fillText(txt, 0, 0)
- /** 恢复旋转角度和坐标原点**/
- ctx.rotate(-deg * Math.PI / 180)
- ctx.translate(-x, -y)
- }
- /** 绘制干扰线**/
- for (var i = 0; i < 4; i++) {
- ctx.strokeStyle = randomColor(40, 180)
- ctx.beginPath()
- ctx.moveTo(randomNum(0, this.options.width), randomNum(0, this.options.height))
- ctx.lineTo(randomNum(0, this.options.width), randomNum(0, this.options.height))
- ctx.stroke()
- }
- /** 绘制干扰点**/
- for (var i = 0; i < this.options.width / 4; i++) {
- ctx.fillStyle = randomColor(0, 255)
- ctx.beginPath()
- ctx.arc(randomNum(0, this.options.width), randomNum(0, this.options.height), 1, 0, 2 * Math.PI)
- ctx.fill()
- }
- },
- /** 验证验证码**/
- validate: function (code) {
- var code = code.toLowerCase()
- var v_code = this.options.code.toLowerCase()
- if (code == v_code) {
- return true
- } else {
- return false
- }
- }
- }
- /** 生成字母数组**/
- function getAllLetter () {
- var letterStr = 'a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z,A,B,C,D,E,F,G,H,I,J,K,L,M,N,O,P,Q,R,S,T,U,V,W,X,Y,Z'
- return letterStr.split(',')
- }
- /** 生成一个随机数**/
- function randomNum (min, max) {
- return Math.floor(Math.random() * (max - min) + min)
- }
- /** 生成一个随机色**/
- function randomColor (min, max) {
- var r = randomNum(min, max)
- var g = randomNum(min, max)
- var b = randomNum(min, max)
- return 'rgb(' + r + ',' + g + ',' + b + ')'
- }
- export {
- GVerify
- }
2.2 登录页面
2.2.1 引入组件
- [....<script>]
- import { GVerify } from '../../static/js/verifyCode';
- [export default { ....]
2.2.2 定义验证对象
注意 verifyCode
- data: function () {
- return {
- title: '若晨后台管理系统',
- ruleForm: {
- username: '',
- password: '',
- verifyCode: ''
- },
- rules: {
- username: [
- { required: true, message: '请输入用户名', trigger: 'blur' }
- ],
- password: [{ required: true, message: '请输入密码', trigger: 'blur' }],
- verifyCode: [
- { required: true, message: '请输入验证码', trigger: 'blur' }
- ]
- },
- verifyCode: null
- }
- },
2.2.3 初始化节点
- <el-form-item prop="verifyCode" class="verifyCodeItemCss">
- <el-input class="verify_css" placeholder="请输入4位验证码" v-model="ruleForm.verifyCode" @keyup.enter.native="submitForm('ruleForm')"></el-input>
- <!--关键 ↓-->
- <div id="v_container"></div>
- </el-form-item>
mounted方法中初始化 'v_container' 为div的id
- mounted () {
- this.verifyCode = new GVerify('v_container')
- }
2.2.4 验证输入的是否正确
通过在data中定义的verifyCode对象的validate()方法,如果输入正确返回true 错误返回 false
- var that = this
- // 获取验证码
- var verifyCode = this.ruleForm.verifyCode
- var verifyFlag = this.verifyCode.validate(verifyCode)
- if (!verifyFlag) {
- that.$notify.error({
- title: '系统提示',
- message: '验证码输入错误'
- })
- return;
- } else {
- that.$notify({
- title: '系统提示',
- message: '验证码输入正确',
- type: 'success'
- })
- }
3、全部页面代码
- <template>
- <div class="login-wrap">
- <div class="video-bg">
- <video muted="" data-autoplay="" loop="" autoplay="" src="https://gss3.baidu.com/6LZ0ej3k1Qd3ote6lo7D0j9wehsv/tieba-movideo/65886292_9687ec67dfc37bfbf847d82b6b52a276_96e56b0f4bfc.mp4" class="video-tvc" id="video-tvc" data-object-fit="">
- </video>
- </div>
- <div class="ms-title">{{title}}</div>
- <div class="ms-login">
- <el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="0px" class="demo-ruleForm">
- <el-form-item prop="username">
- <el-input v-model="ruleForm.username" placeholder="请输入账号"></el-input>
- </el-form-item>
- <el-form-item prop="password">
- <el-input type="password" placeholder="请输入密码" v-model="ruleForm.password" @keyup.enter.native="submitForm('ruleForm')"></el-input>
- </el-form-item>
- <el-form-item prop="verifyCode" class="verifyCodeItemCss">
- <el-input class="verify_css" placeholder="请输入4位验证码" v-model="ruleForm.verifyCode" @keyup.enter.native="submitForm('ruleForm')"></el-input>
- <div id="v_container"></div>
- </el-form-item>
- <div class="login-btn">
- <el-button class="loginBtn" type="primary" @click="submitForm('ruleForm')">登录</el-button>
- </div>
- <!--<p style="font-size:12px;line-height:30px;color:#999;">Tips : 用户名和密码随便填。</p>-->
- </el-form>
- </div>
- </div>
- </template>
- <script>
- import { GVerify } from '../../static/js/verifyCode';
- export default {
- data: function () {
- return {
- title: '若晨后台管理系统',
- ruleForm: {
- username: '',
- password: '',
- verifyCode: ''
- },
- rules: {
- username: [
- { required: true, message: '请输入用户名', trigger: 'blur' }
- ],
- password: [{ required: true, message: '请输入密码', trigger: 'blur' }],
- verifyCode: [
- { required: true, message: '请输入验证码', trigger: 'blur' }
- ]
- },
- verifyCode: null
- }
- },
- mounted () {
- // 随机播放帧数
- this.videoCut()
- this.verifyCode = new GVerify('v_container')
- },
- methods: {
- submitForm (formName) {
- var that = this
- // 获取验证码
- var verifyCode = this.ruleForm.verifyCode
- var verifyFlag = this.verifyCode.validate(verifyCode)
- if (!verifyFlag) {
- that.$notify.error({
- title: '系统提示',
- message: '验证码输入错误'
- })
- return;
- } else {
- that.$notify({
- title: '系统提示',
- message: '验证码输入正确',
- type: 'success'
- })
- }
- this.$refs[formName].validate(valid => {
- if (valid) {
- // 判断是否登录成功
- let param = {
- userName: that.ruleForm.username,
- passWord: that.ruleForm.password
- }
- // this.axios.post(this.$service.user.USER_LOGIN_API.url,param).then(res=>{
- // console.log("请求成功",res)
- // if(res.data.data != undefined){
- // that.$notify({
- // title: '系统提示',
- // message: '登录成功',
- // type:"success"
- // });
- // // 存local
- // localStorage.setItem('ms_username',res.data.data.userNickName);
- // localStorage.setItem('token',res.data.data.id);
- // self.$router.push('/index');
- // }else{
- // that.$notify.error({
- // title: '系统提示',
- // message: '用户账户密码输出错误'
- // });
- // }
- localStorage.setItem('ms_username', 'admin')
- localStorage.setItem('token', 'admin')
- that.$router.push('/index')
- } else {
- console.log('error submit!!')
- return false
- }
- })
- },
- videoCut () {
- $('video').on('loadedmetadata', function (event) {
- var duration = Math.ceil(this.duration)
- this.currentTime = Math.round(Math.random() * duration)
- })
- }
- }
- }
- </script>
- <style scoped>
- .verify_css {
- width: 45%;
- }
- .login-wrap {
- position: relative;
- width: 100%;
- height: 100%;
- }
- .ms-title {
- position: absolute;
- top: 50%;
- width: 100%;
- margin-top: -230px;
- text-align: center;
- font-size: 30px;
- color: #fff;
- }
- .ms-login {
- position: absolute;
- left: 50%;
- top: 50%;
- width: 300px;
- height: 13rem;
- margin: -150px 0 0 -190px;
- padding: 40px;
- border-radius: 6%;
- background: #fff;
- box-shadow: -2px -2px 17px 1px #1e9fff;
- }
- .login-btn {
- text-align: center;
- }
- .login-btn button {
- width: 100%;
- height: 36px;
- }
- .video-bg {
- min-width: 100%;
- min-height: 100%;
- width: 100%;
- height: 100%;
- opacity: 0.9;
- }
- video {
- width: 100%;
- height: 100%;
- object-fit: cover;
- /* opacity: 0.6; */
- }
- .loginBtn:hover {
- box-shadow: 0px 1px 4px rgba(0, 0, 0, 0.3), 0px 0px 20px rgba(0, 0, 0, 0.1) inset;
- }
- #v_container {
- width: auto;
- height: auto;
- display: inline-flex;
- position: relative;
- top: 1rem;
- margin-top: -2rem;
- }
- </style>
本文网址:https://www.zztuku.com/index.php/detail-9819.html
站长图库 - vue.js怎么实现验证码
申明:如有侵犯,请 联系我们 删除。
您还没有登录,请 登录 后发表评论!
提示:请勿发布广告垃圾评论,否则封号处理!!