以登錄界面為例(效果圖)
登錄界面效果圖
新建驗證碼組件 SIdentity
<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: 16
},
fontSizeMax: {
type: Number,
default: 40
},
backgroundColorMin: {
type: Number,
default: 180
},
backgroundColorMax: {
type: Number,
default: 240
},
colorMin: {
type: Number,
default: 50
},
colorMax: {
type: Number,
default: 160
},
lineColorMin: {
type: Number,
default: 40
},
lineColorMax: {
type: Number,
default: 180
},
dotColorMin: {
type: Number,
default: 0
},
dotColorMax: {
type: Number,
default: 255
},
contentWidth: {
type: Number,
default: 112
},
contentHeight: {
type: Number,
default: 38
}
},
methods: {
// 生成一個隨機數(shù)
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'
// 繪制背景
ctx.fillStyle = this.randomColor(this.backgroundColorMin, this.backgroundColorMax)
ctx.fillRect(0, 0, this.contentWidth, this.contentHeight)
// 繪制文字
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)
// 修改坐標原點和旋轉(zhuǎn)角度
ctx.translate(x, y)
ctx.rotate(deg * Math.PI / 180)
ctx.fillText(txt, 0, 0)
// 恢復坐標原點和旋轉(zhuǎn)角度
ctx.rotate(-deg * Math.PI / 180)
ctx.translate(-x, -y)
},
drawLine(ctx) {
// 繪制干擾線
for (let i = 0; i < 8; 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) {
// 繪制干擾點
for (let i = 0; i < 100; 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>
.s-canvas {
height: 38px;
}
canvas {
margin-top: 1px;
margin-left: 8px;
}
</style>
在所需界面中引入組件
HTML 代碼如下
<template>
<div class="aric-main">
<img src="../assets/thbg.png">
<el-form :model="ruleForm" status-icon :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm aric-login-form">
<el-form-item label="用戶名" prop="username">
<el-input placeholder="請輸入手機號" v-model.number="ruleForm.username" clearable></el-input>
</el-form-item>
<el-form-item label="密碼" prop="pass">
<el-input placeholder="請輸入密碼" type="password" v-model="ruleForm.pass" show-password clearable></el-input>
</el-form-item>
<el-form-item label="驗證碼" prop="validate">
<el-input class="aric-yanzheng" placeholder="請輸入驗證碼" type="text" v-model="ruleForm.validate"></el-input>
<div class="login-code" @click="refreshCode">
<Identify :identifyCode="identifyCode"></Identify>
</div>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="submitForm('ruleForm')">提交</el-button>
<el-button @click="registerClick">注冊</el-button>
<span class="aric-foget-btn" @click="Forgetpass">?忘記密碼</span>
</el-form-item>
</el-form>
</div>
</template>
JS代碼如下
<script>
import Identify from '../components/SIdentity.vue';
export default {
name: 'login',
template: {
},
components: {
Identify
},
data() {
var checkPhone = (rule, value, callback) => {
if (!value) {
return callback(new Error('手機號不能為空'));
} else {
const reg = /^1[3|4|5|7|8][0-9]\d{8}$/
console.log(reg.test(value));
if (reg.test(value)) {
callback();
} else {
return callback(new Error('手機號格式錯誤'));
}
}
};
const validateVerifycode = (rule, value, callback) => {
if (!value) {
callback(new Error('請輸入驗證碼'));
} else if (value != this.identifyCode) {
console.log('validateVerifycode:', value)
this.ruleForm.validate = ''
this.refreshCode()
callback(new Error('驗證碼不正確!'));
} else {
callback();
}
};
return {
// isDebugLogin: false,
identifyCodes: '123456789',
identifyCode: '',
ruleForm: {
pass: '',
username: '',
validate: ''
},
rules: {
username: [
// { required: true, message: '請輸入用戶名', trigger: 'blur' },
// { min: 3, max: 8, message: '長度為 3 到 8 個字符', trigger: 'blur' }
{ validator: checkPhone, required: true, trigger: 'blur' }
],
pass: [
{ required: true, message: '請輸入密碼', trigger: 'blur' },
{ min: 6, max: 17, message: '長度為 6 到 17 個字符', trigger: 'change' }
],
validate: [
{ validator: validateVerifycode, required: true, trigger: 'blur' }
]
}
};
},
mounted () {
// 初始化驗證碼
this.identifyCode = ''
this.makeCode(this.identifyCodes, 4)
},
methods: {
randomNum(min, max) {
return Math.floor(Math.random() * (max - min) + min)
},
refreshCode() {
this.identifyCode = ''
this.makeCode(this.identifyCodes, 4)
},
makeCode(o, l) {
for (let i = 0; i < l; i++) {
this.identifyCode += this.identifyCodes[
this.randomNum(0, this.identifyCodes.length)
]
}
},
submitForm(formName) {
this.$refs[formName].validate((valid) => {
console.log(valid)
if (valid) {
alert('submit!');
// 發(fā)送請求給后臺,請求數(shù)據(jù)成功之后
this.$router.push('/home')
} else {
console.log('error submit!!');
return false;
}
});
},
created() {
this.refreshCode()
},
registerClick() {
this.$router.push('/register');
},
Forgetpass() {
this.$router.push( '/forget' )
}
}
}
</script>
