本篇内容主要讲解“怎么用vue实现登录验证码”，感兴趣的朋友不妨来看看。本文介绍的方法操作简单快捷，实用性强。下面就让小编来带大家学习“怎么用vue实现登录验证码”吧!
本文实例为大家分享了vue实现登录验证码的具体代码，供大家参考，具体内容如下
先来demo效果图
canvas验证码组件（可直接复制，无需改动）
<template>
<div class="s-canvas">
<canvas id="s-canvas" :width="contentWidth" :height="contentHeight"></canvas>
</div>
</template>
<script>
export default {
name: "SIdentify",
props: {
identifyCode: {
type: String,
default: '1234'
},
fontSizeMin: {
type: Number,
default: 25
},
fontSizeMax: {
type: Number,
default: 30
},
backgroundColorMin: {
type: Number,
default: 255
},
backgroundColorMax: {
type: Number,
default: 255
},
colorMin: {
type: Number,
default: 0
},
colorMax: {
type: Number,
default: 160
},
lineColorMin: {
type: Number,
default: 100
},lineColorMax: {
type: Number,
default: 255
},
dotColorMin: {
type: Number,
default: 0
},
dotColorMax: {
type: Number,
default: 255
},
contentWidth: {
type: Number,
default: 112
},
contentHeight: {
type: Number,
default: 31
}
},
methods: {
// 生成一个随机数
randomNum(min, max) {
return Math.floor(Math.random() * (max - min) + min)
},
// 生成一个随机的颜色
randomColor(min, max) {
let r = this.randomNum(min, max)
let g = this.randomNum(min, max)
let b = this.randomNum(min, max)
return 'rgb(' + r + ',' + g + ',' + b + ')'
},
drawPic() {
let canvas = document.getElementById('s-canvas')
let ctx = canvas.getContext('2d')
ctx.textBaseline = 'bottom'
// 绘制背景
ctx.fillStyle = this.randomColor(this.backgroundColorMin, this.backgroundColorMax)
ctx.fillRect(0, 0, this.contentWidth, this.contentHeight)
// 绘制文字
for (let i = 0; i < this.identifyCode.length; i++) {
this.drawText(ctx, this.identifyCode[i], i)
}
this.drawLine(ctx)
this.drawDot(ctx)
},
drawText(ctx, txt, i) {
ctx.fillStyle = this.randomColor(this.colorMin, this.colorMax)
ctx.font = this.randomNum(this.fontSizeMin, this.fontSizeMax) + 'px SimHei'
let x = (i + 1) * (this.contentWidth / (this.identifyCode.length + 1))
let y = this.randomNum(this.fontSizeMax, this.contentHeight - 5)
var deg = this.randomNum(-45, 45)
// 修改坐标原点和旋转角度
ctx.translate(x, y)
ctx.rotate(deg * Math.PI / 180)
ctx.fillText(txt, 0, 0)
// 恢复坐标原点和旋转角度
ctx.rotate(-deg * Math.PI / 180)
ctx.translate(-x, -y)
},
drawLine(ctx) {
// 绘制干扰线
for (let i = 0; i < 5; i++) {
ctx.strokeStyle = this.randomColor(this.lineColorMin, this.lineColorMax)
ctx.beginPath()
ctx.moveTo(this.randomNum(0, this.contentWidth), this.randomNum(0, this.contentHeight))
ctx.lineTo(this.randomNum(0, this.contentWidth), this.randomNum(0, this.contentHeight))
ctx.stroke()
}
},
drawDot(ctx) {
// 绘制干扰点
for (let i = 0; i < 80; i++) {
ctx.fillStyle = this.randomColor(0, 255)
ctx.beginPath()
ctx.arc(this.randomNum(0, this.contentWidth), this.randomNum(0, this.contentHeight), 1, 0, 2 * Math.PI)
ctx.fill()
}
}
},
watch: {
identifyCode() {
this.drawPic()
}
},
mounted() {
this.drawPic()
}
}
</script>
<style scoped>
.s-canvas {
height: 38px;
}
.s-canvas canvas{
margin-top: 1px;
margin-left: 8px;
}
</style>login页面的html部分，按需改动
引入验证码组件
methods方法
login页面完整代码
<style lang="less"> @import './login.less'; </style> <template> <div class="login" @keydown.enter="handleSubmit"> <div class="login-con"> <Card :bordered="false" > <div class="form-con"> <Tabs value="name1" :animated="false"> <TabPane label="登录" name="name1"> <Form ref="loginForm" :model="form" :rules="rules" :label-width="90" inline> <FormItem label="帐号" prop="username"> <Input v-model="form.username" placeholder="请输入帐号" ref="input" clearable /> </FormItem> <FormItem label="密码" prop="password"> <Input v-model="form.password" placeholder="请输入密码" clearable /> </FormItem> <FormItem label="验证码" prop="verificationCode"> <Input v-model="form.verificationCode" placeholder="请输入验证码" clearable /> <div @click="refreshCode" > <!--验证码组件--> <s-identify :identifyCode="identifyCode"></s-identify> </div> </FormItem> <div > <Button @click="handleSubmit" type="primary" >登录</Button> </div> </Form> </TabPane> <TabPane label="注册" name="name2"> <Form ref="formValidate" :model="formValidate" :rules="ruleValidate" :label-width="90" inline> <FormItem label="帐号" prop="username"> <Input v-model="formValidate.username" placeholder="请输入帐号" ref="input" clearable /> </FormItem> <FormItem label="密码" prop="password"> <Input v-model="formValidate.password" placeholder="请输入密码" clearable /> </FormItem> <FormItem label="手机号" prop="mobile"> <Input v-model="formValidate.mobile" placeholder="请输入手机号" clearable /> </FormItem> <FormItem label="短信验证码" prop="header"> <Input v-model="formValidate.header" placeholder="短信验证码" /> <Button type="primary" size="small" @click="getCode" :disabled="codeDisabled">{{codeMsg}}</Button> </FormItem> <div > <Button type="primary" @click="register('formValidate')">注册</Button> </div> </Form> </TabPane> </Tabs> </div> </Card> </div> <!--<vue-particles color="#FF4500" :particleOpacity="0.7" :particlesNumber="300" shapeType="circle" :particleSize="7" linesColor="#00FF00" :linesWidth="2" :lineLinked="true" :lineOpacity="0.4" :linesDistance="150" :moveSpeed="4" :hoverEffect="true" hoverMode="grab" :clickEffect="true" clickMode="repulse" > </vue-particles>--> </div> </template> <script> import Cookies from 'js-cookie'; import {apiRequest, login, getCode} from '@/service/service'; import SIdentify from '@/components/SIdentify'; export default { components: { SIdentify }, name: 'login', data() { return { form: {}, formValidate: {}, rules: { username: [ {required: true, message: '登录用户名不能为空', trigger: 'blur'} ], password: [ {required: true, message: '登录密码不能为空', trigger: 'blur'} ], verificationCode: [ {required: true, message: '验证码不能为空', trigger: 'blur'} ] }, ruleValidate: { username: [ {required: true, message: '登录用户名不能为空', trigger: 'blur'} ], password: [ {required: true, message: '登录密码不能为空', trigger: 'blur'} ], mobile: [ {required: true, message: '手机号不能为空', trigger: 'blur'} ], header: [ {required: true, message: '短信验证码不能为空', trigger: 'blur'} ] }, img:'../../static/grey_wolf.jpg', // 是否禁用按钮 codeDisabled: false, // 倒计时秒数 countdown: 60, // 按钮上的文字 codeMsg: '获取验证码', // 定时器 timer: null, identifyCode: '', identifyCodes: '1234567890abcdefjhijklinopqrsduvwxyz', }; }, methods: { // 刷新验证码 refreshCode () { this.identifyCode = '' this.makeCode(this.identifyCodes,4); }, makeCode (o,l) { for (let i = 0; i < l; i++) { this.identifyCode += this.identifyCodes[this.randomNum(0, this.identifyCodes.length)] } }, randomNum (min, max) { return Math.floor(Math.random() * (max - min) + min) }, // 获取短信验证码 getCode() { // 验证码60秒倒计时 if (!this.timer) { this.getValidStr(); this.timer = setInterval(this.getValidStr, 1000); } apiRequest(this, getCode(this.form.mobile), response => { }); }, getValidStr(){ if (this.countdown > 0 && this.countdown <= 60) { this.countdown--; if (this.countdown !== 0) { this.codeMsg = "重新发送(" + this.countdown + ")"; this.codeDisabled = true; } else { clearInterval(this.timer); this.codeMsg = "获取验证码"; this.countdown = 60; this.timer = null; this.codeDisabled = false; } } }, handleSubmit() { this.$refs.loginForm.validate((valid) => { if (valid) { //登录密码做MD5加密 let password = this.$copyto.md5(this.form.password); //登录接口请求 apiRequest(this, login(this.form.username, password), response => { this.$store.commit('setUserInfo', response.data); Cookies.set('user', this.form.username); Cookies.set('userId', response.data.id); localStorage.sessionId = response.sessionId this.$store.commit('setAvator', ''); if (this.form.userName === 'admin') { Cookies.set('access', 0); } else { Cookies.set('access', 1); } this.$router.push({name: 'home_index'}); }); } }); }, register() { } }, mounted () { // 初始化验证码 this.identifyCode = '' this.makeCode(this.identifyCodes, 4) }, }; </script> <style> </style>
到此，相信大家对“怎么用vue实现登录验证码”有了更深的了解，不妨来实际操作一番吧！这里是亿速云网站，更多相关内容可以进入相关频道进行查询，关注我们，继续学习！
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