vue實現登入驗證碼
阿新 • • 發佈：2021-08-15
本文例項為大家分享了實現登入驗證碼的具體程式碼，供大家參考，具體內容如下
先來demo效果圖
canvas驗證碼元件（可直接複製，無需改動）
<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,colorMin: {
type: Number,default: 0
},colorMax: {
type: Number,default: 160
},lineColorMin: {
type: Number,default: 100
},lineColorMax: {
type: Number,dotColorMin: {
type: Number,dotColorMax: {
type: Number,contentWidth: {
type: Number,default: 112
},contentHeight: {
type: Number,default: 31
}
},methods: {
// 生成一個隨機數
randomNum(min,max) {
return Math.floor(Math.random() * (max - min) + min)
},// 生成一個隨機的顏色
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'
// 繪製背景
ctx.fillStyle = this.randomColor(this.backgroundColorMin,this.backgroundColorMax)
ctx.fillRect(0,this.contentWidth,this.contentHeight)
// 繪製文字
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)
// 修改座標原點和旋轉角度
ctx.translate(x,y)
ctx.rotate(deg * Math.PI / 180)
ctx.fillText(txt,0)
// 恢復座標原點和旋轉角度
ctx.rotate(-deg * Math.PI / 180)
ctx.translate(-x,-y)
},drawLine(ctx) {
// 繪製干擾線
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.contentHeight))
ctx.stroke()
}
},drawDot(ctx) {
// 繪製干擾點
for (let i = 0; i < 80; i++) {
ctx.fillStyle = this.randomColor(0,255)
ctx.beginPath()
ctx.arc(this.randomNum(0,this.contentHeight),1,2 * 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頁面的html部分，按需改動
引入驗證碼元件
methods方法
login頁面完整程式碼
<style lang="less">
@import './login.less';
</style>
<template>
<div class="login" @keydown.enter="handleSubmit">
<div class="login-con">
<Card :bordered="false" style="width: 350px;height: 380px">
<div class="form-con">
<Tabs value="name1" :animated="false">
<TabPane label="登入" name="name1">
<Form ref="loginForm" :model="form" :rules="rules" :label-width="90" inline>
<FormItem label="帳號" prop="username">
<Input v-model="form.username" placeholder="請輸入帳號" ref="input" clearable style="width: 200px"/>
</FormItem>
<FormItem label="密碼" prop="password">
<Input v-model="form.password" placeholder="請輸入密碼" clearable style="width: 200px"/>
</FormItem>
<FormItem label="驗證碼" prop="verificationCode">
<Input v-model="form.verificationCode" placeholder="請輸入驗證碼" clearable style="width: 200px"/>
<div @click="refreshCode" style="margin-top: 20px">
<!--驗證碼元件-->
<s-identify :identifyCode="identifyCode"></s-identify>
</div>
</FormItem>
<div style="text-align: center">
<Button @click="handleSubmit" type="primary" style="margin-right: 20px">登入</Button>
</div>
</Form>
</TabPane>
<TabPane label="註冊" name="name2">
<Form ref="formValidate" :model="formValidate" :rules="ruleValidate" :label-width="90" inline>
<FormItem label="帳號" prop="username">
<Input v-model="formValidate.username" placeholder="請輸入帳號" ref="input" clearable style="width: 200px"/>
</FormItem>
<FormItem label="密碼" prop="password">
<Input v-model="formValidate.password" placeholder="請輸入密碼" clearable style="width: 200px"/>
</FormItem>
<FormItem label="手機號" prop="mobile">
以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支援我們。