uniapp动态获取验证码
<template>
<view class="code">
<u-navbar title="找回" :autoBack="true" :fixed='true' :placeholder="true"></u-navbar>
<view class="wrodtext">
输入验证码
</view>
<view class="code-tip-one">
<view class="code-tip">已发送至<text>+86 {{phone.substring(0, 3)}}****{{phone.substr(phone.length-4)}}</text>
</view>
<view class="code-errow" v-if="codeclolor == '#ff0000'">验证码输入错误</view>
</view>
<input class="cinput" adjust-position="false" auto-blur="true" @blur="blur" @input="codenum" :focus="focus"
value="code" v-model="code" type="number" maxlength="6" />
<view class="code-input">
<view v-for="(item,index) in 4" :key="index" @click="codefocus(index)"
:style='(index == code.length? "border: 5rpx solid #242832;width: 122rpx;height: 122rpx;line-height: 122rpx;":"color: " + codeclolor + ";" +"border: 2rpx solid" + codeclolor)'>
{{code[index] && code[index] || ''}}
</view>
</view>
<view class="code-get">
<view class="noreceived" @click="nogetCode()">收不到验证码？</view>
<view class="recode" @click="getCode()">重新获取({{sec}}s)</view>
</view>
<!-- <button class="verifylogin" @click="getCode()" :disabled="verifyShow">验证并登录</button> -->
<button class="verifylogin" @click="gonext()">下一步</button>
</view>
</template>
<script>
export default {
data() {
return {
phone: '12345678910',
// 验证码输入聚焦
focus: true, //input焦点，用于键盘隐藏后重新唤起
// 验证码框颜色
codeclolor: "#313131", //自定义光标的颜色
// 验证码获取秒数
sec: '20', //这是重新获取验证码的倒计时(可根据需求修改)
code: '', //这是用户输入的验证码
codeCorrect: '', //正确的验证码
verifyShow: false, //是否禁用按钮
}
},
methods: {
// 输入验证码
codenum: function(event) {
// console.log('输入的值',event.target.value)
var that = this
var code = event.target.value
that.code = code
if (code.length == 4) {
if (code == that.codeCorrect) {
//输入4位验证码后自动进行验证并执行验证成功的函数
console.log('验证码正确：', that.code)
} else {
console.log('验证码错误!!!：', that.code)
that.codeclolor = "#ff0000"
setTimeout(function() {
that.code = []
event.target.value = ""
that.codeclolor = "#313131"
}, 1500)
}
}
},
// 键盘隐藏后设置失去焦点
blur: function() {
var that = this
that.focus = false
},
// 点击自定义光标显示键盘
codefocus: function(e) {
var that = this
if (e == that.code.length) {
that.focus = true
}
},
// 收不到验证码
nogetCode(){
uni.navigateTo({
url: "/pages/my/nocode/nocode",
});
},
getCode() { //获取验证码
const that = this
that.codeCorrect = that.getVerificationCode(4) //可以不传值，默认为4位随机码
console.log('生成的随机码为：' + that.codeCorrect)
that.timedown(that.sec) // 倒计时
},
gonext(){
uni.navigateTo({
url: "/pages/my/setword/setword",
});
},
//随机生成几位数
getVerificationCode(codeLength) { //传入需要的字符串长度，不传默认为4
// 准备一个用来抽取码的字符串，或者字典
// let verification_code_str = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"; //数字和字母
let verification_code_str = "0123456789"; //纯数字
// 获取某个范围的随机整数，封装的函数，在上面抽取字典的时候进行了调用
function getRandom(min, max) { //意思是获取min-max数字之间的某个随机数，直接调用即可
return Math.round(Math.random() * (max - min) + min);
}
let newStr = ''; //创建一个空字符串，用来拼接四位随机码
for (var i = 0; i < codeLength; i++) { //for循环四次，则拼接四次随机码
newStr += verification_code_str[getRandom(0, verification_code_str.length -
1)]; //从字典中随机选一个下标，并拼接到空字符串中
}
return newStr
},
//倒计时
timedown: function(num) {
let that = this;
if (num == 0) {
that.verifyShow = false; // 不禁用获取验证码按钮
that.sec = 20
return clearTimeout();
} else {
that.verifyShow = true; // 禁用获取验证码按钮
setTimeout(function() {
that.sec = num - 1
that.timedown(num - 1);
}, 1000); //定时每秒减一
}
},
}
}
</script>
<style scoped lang="less">
.code {
margin: auto;
margin-top: 50rpx;
width: 100vw;
height: 100vh;
background-color: #FFFFFF !important;
color: #000000 !important;
padding: 0 20rpx;
}
.wrodtext {
color: #242832;
font-size: 48rpx;
font-family: PingFangSC-Semibold, PingFang SC;
font-weight: 600;
margin: 80rpx 0 80rpx 14rpx;
padding: 20rpx 0;
}
.code-tip-one {
width: 650rpx;
height: 250rpx;
line-height: 100rpx;
font-size: 60rpx;
font-weight: bold;
color: #313131;
}
.code-tip {
font-size: 28rpx;
font-family: PingFangSC-Regular, PingFang SC;
font-weight: 400;
color: #8F8F9A;
position: relative;
top: -180rpx;
left: 330rpx;
}
.code-errow {
width: 650rpx;
height: 50rpx;
line-height: 25rpx;
font-size: 28rpx;
font-weight: normal;
color: #ff0000;
margin: 20rpx 60% 0 40%;
}
.code-tip>text {
padding: 0 20rpx;
// width: 650rpx;
font-size: 28rpx;
font-family: PingFangSC-Regular, PingFang SC;
font-weight: 400;
color: #242832;
}
.code-input {
position: absolute;
top: 420rpx;
left: 40rpx;
// width: 650rpx;
height: 100rpx;
display: flex;
}
.code-input>view {
margin-right: 54rpx;
// margin-left: 15rpx;
width: 128rpx;
height: 128rpx;
line-height: 128rpx;
// font-size: 60rpx;
// font-weight: bold;
// color: #DDDEE0;
text-align: center;
// opacity: 0.7;
// border: 1px solid #DDDEE0;
// border-radius: 10rpx;
}
.code-input>view:nth-child(1) {
margin-left: 0rpx;
}
.cinput {
position: fixed;
left: -100rpx;
width: 50rpx;
height: 50rpx;
}
.code-get{
transform: translatey(-80rpx);
width: 90vw;
display: flex;
justify-content: space-between;
}
.noreceived{
font-size: 26rpx;
font-family: PingFangSC-Regular, PingFang SC;
font-weight: 400;
color: #242832;
margin-left: 20rpx;
}
.recode {
font-size: 26rpx;
font-family: PingFangSC-Regular, PingFang SC;
font-weight: 400;
color: #F03056;
}
.verifylogin {
width: 92vw;
height: 88rpx;
line-height: 88rpx;
background: #F03056;
margin-top: 200rpx;
font-size: 32rpx;
font-family: PingFangSC-Medium, PingFang SC;
font-weight: 500;
color: #FFFFFF;
}
</style>
备注：uview框架也有类似代码
https://www.uviewui.com/components/codeInput.html
自己记录一下：二维码扫描功能uni.scanCode(OBJECT) | uni-app官网
https://uniapp.dcloud.net.cn/api/system/barcode.html#scancode