How to implement WeChat applet verification code? (source code)

The content of this article is about how to implement the WeChat applet verification code? (Source code), it has certain reference value. Friends in need can refer to it. I hope it will be helpful to you.

Verification code:

<input bindinput="makecodeInput" type="text">
<view bindtap="getcode" class="makecode">{{code}}</view><button bindtap="login">登录</button>

index.js

data: {
code: "",
makecode:"",
},
//获取输入验证码
makecodeInput:function（e）{
this.setData（{
makecode:e.detail.value
}）
},
// 登录
login: function（） {
if（this.data.makecode != this.data.code）{
wx.showToast（{
title: '验证码不正确',
icon: 'none',
duration: 2000
}）
}
},
//验证码
createCode（） {
var code;
//首先默认code为空字符串
code = '';
//设置长度，这里看需求，我这里设置了4
var codeLength = 4;
//设置随机字符
var random = new Array（0, 1, 2, 3, 4, 5, 6, 7, 8, 9）；
//循环codeLength 我设置的4就是循环4次
for （var i = 0; i < codeLength; i++） {
//设置随机数范围，这设置为0 ~ 10
var index = Math.floor（Math.random（） * 10）；
//字符串拼接 将每次随机的字符 进行拼接
code += random[index];
}
//将拼接好的字符串赋值给展示的code
this.setData（{
code: code
}）
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function（options） {
this.createCode（）；
},
getcode: function（） {
this.createCode（）；
},

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