微信小程序判断手机号是否合法的实例代码

目录

• 场景
• 效果
• 代码
• 总结

场景

在注册页面输入手机号，在请求注册接口前先行判别输入的手机号码是否合法；

效果

代码

导入 vant-weapp 组件：user-register.json

{
  "usingComponents": {
  	"van-cell-group": "@vant/weapp/cell-group/index",
  	"van-field": "@vant/weapp/field/index",
  	"van-dropdown-menu": "@vant/weapp/dropdown-menu/index",
  	"van-dropdown-item": "@vant/weapp/dropdown-item/index",
  	"van-button": "@vant/weapp/button/index"
  }
}

编写布局文件：user-register.wxml

<!-- pages/user-register/user-register.wxml -->
<view class="register-block">
  <view class="title">
    <text class="text">注册</text>
  </view>
  <van-cell-group class="input">
    <van-field label="学号" value="{{ studentNumber }}" placeholder="请输入学号" required clearable center bind:blur="setStudentNumber" />
    <van-field label="用户名" value="{{ userName }}" placeholder="请输入用户名" required clearable center bind:blur="setUsername" />
    <van-field label="班级" value="{{ className }}" placeholder="请输入所在班级" required clearable center bind:blur="setClassName" />
    <van-field label="手机号" value="{{ phoneNumber }}" placeholder="请输入手机号" error="{{ phoneLength || phoneFormat }}" error-message="{{ phoneError }}" required clearable center bind:blur="setphoneNumber" />
    <van-field label="性别" required use-input-slot>
      <view style="position: absolute; left: -16rpx;" slot="input">
        <van-dropdown-menu active-color="#92B6D5">
          <van-dropdown-item value="{{ gender }}" options="{{ option1 }}" bind:change="changeGender" />
        </van-dropdown-menu>
      </view>
    </van-field>
    <van-field label="校区" required use-input-slot>
      <view style="position: absolute; left: -16rpx;" slot="input">
        <van-dropdown-menu active-color="#92B6D5">
          <van-dropdown-item value="{{ area }}" options="{{ option2 }}" bind:change="changeArea" />
        </van-dropdown-menu>
      </view>
    </van-field>
    <van-field label="密码" value="{{ password }}" placeholder="请输入密码" required clearable center type="password" bind:blur="setPassword" />
    <van-field label="确认密码" value="{{ repassword }}" placeholder="请再次输入密码" error="{{ rePwdEqual }}" error-message="{{ errorMsg }}" required clearable center type="password" bind:blur="setRePassword" />
  </van-cell-group>
  <view class="login-block">
    <text class="text" bind:tap="gotoLogin">立即登录</text>
    <!-- <text class="">忘记密码</text> -->
  </view>
  <van-button class="btn" size="large" type="info" bind:tap="userRegister">注册</van-button>
</view>

编写样式文件：user-register.scss

/* pages/user-register/user-register.scss */
.register-block{
  margin: 200rpx 20rpx 0 20rpx;

  .title{
    text-align: center;
    margin-bottom: 60rpx;

    .text{
      font-size: 60rpx;
      font-weight: 300;
    }
  }

  .login-block{
    text-align: right;
    margin: 10rpx 0;

    .text{
      color: gray;
      font-weight: 300;
      font-size: smaller;
    }
  }
}

判断手机号是否合法

  /**
   * 输入手机号
   */
  setphoneNumber: function (event) {
    // console.log('username', event.detail.value)
    this.setData({
      phoneNumber: event.detail.value
    })
    const regex = /^(((13[0-9]{1})|(15[0-9]{1})|(18[0-9]{1})|(17[0-9]{1}))+\d{8})$/
    if (this.data.phoneNumber.length !== 0 && this.data.phoneNumber.length !== 11) {
      this.setData({
        phoneLength: true,
        phoneError: '手机长度有误'
      })
    } else if (this.data.phoneNumber.length !== 0 && !regex .test(this.data.phoneNumber)) {
      this.setData({
        phoneFormat: true,
        phoneError: '手机号有误'
      })
    }
  },

完整js文件：user-register.js

// pages/user-login/user-login.js
Page({
/**
* 页面的初始数据
*/
data: {
studentNumber: '',
userName: '',
className: '',
phoneNumber: '',
mygender: '',
schoolarea: '',
password: '',
repassword: '',
gender: 0,
option1: [
{ text: '请选择性别', value: 0 },
{ text: '男', value: 1 },
{ text: '女', value: 2 }
],
area: 0,
option2: [
{ text: '请选择所在校区', value: 0 },
{ text: '北校区', value: 1 },
{ text: '南校区', value: 2 }
],
// 错误提示
rePwdEqual: false,
phoneLength: false,
phoneFormat: false
},
/**
* 输入学号
*/
setStudentNumber: function (event) {
// console.log('username', event.detail.value)
this.setData({
studentNumber: event.detail.value
})
},
/**
* 输入用户名
*/
setUsername: function (event) {
// console.log('username', event.detail.value)
this.setData({
userName: event.detail.value
})
},
/**
* 输入所在班级
*/
setClassName: function (event) {
// console.log('username', event.detail.value)
this.setData({
className: event.detail.value
})
},
/**
* 输入手机号
*/
setphoneNumber: function (event) {
// console.log('username', event.detail.value)
this.setData({
phoneNumber: event.detail.value
})
const myReg = /^(((13[0-9{1})|(15[0-9]{1})|(18[0-9]{1})|(17[0-9]{1})) + \d{8})$/
if (this.data.phoneNumber.length !== 0 && this.data.phoneNumber.length !== 11) {
this.setData({
phoneLength: true,
phoneError: '手机长度有误'
})
} else if (this.data.phoneNumber.length !== 0 && !myReg.test(this.data.phoneNumber)) {
this.setData({
phoneFormat: true,
phoneError: '手机号有误'
})
}
},
/**
* 修改性别
* @param {*} event
*/
changeGender: function (event) {
if (event.detail === 1) {
this.setData({
mygender: '男'
})
} else if (event.detail === 2) {
this.setData({
mygender: '女'
})
} else if (event.detail === 0) {
wx.showToast({
title: '请选择性别', // 提示的内容
duration: 2000, // 延迟时间
mask: true // 显示透明蒙层，防止触摸穿透
})
}
console.log('改性别', event.detail + this.data.mygender)
},
/**
* 修改所在校区
*/
changeArea: function (event) {
if (event.detail === 1) {
this.setData({
schoolarea: '北校区'
})
} else if (event.detail === 2) {
this.setData({
schoolarea: '南校区'
})
} else if (event.detail === 0) {
wx.showToast({
title: '请选择所在校区', // 提示的内容
duration: 2000, // 延迟时间
mask: true // 显示透明蒙层，防止触摸穿透
})
}
console.log('改校区', event.detail + this.data.schoolarea)
},
/**
* 输入密码
*/
setPassword: function (event) {
// console.log('password', event.detail.value)
this.setData({
password: event.detail.value
})
},
/**
* 再次输入密码
*/
setRePassword: function (event) {
// console.log('repassword', event.detail.value)
this.setData({
repassword: event.detail.value
})
if (this.data.password === this.data.repassword && this.data.password.length !== 0) {
this.setData({
rePwdEqual: false,
errorMsg: ''
})
} else if (this.data.password !== this.data.repassword && this.data.password.length !== 0) {
this.setData({
rePwdEqual: true,
errorMsg: '两次输入的密码不一致'
})
}
},
/**
* 进入登录界面
*/
gotoLogin: function () {
// 当前要跳转到另一个界面，但是会保留现有界面
wx.redirectTo({
url: '../user-login/user-login'
})
},
/**
* 请求注册
*/
userRegister: function () {
// console.log('studentNumber', this.data.studentNumber)
// console.log('userName', this.data.userName)
// console.log('className', this.data.className)
// console.log('phoneNumber', this.data.phoneNumber)
// console.log('mygender', this.data.mygender)
// console.log('schoolarea', this.data.schoolarea)
const existStudentNumber = this.data.studentNumber.length !== 0
const existUserName = this.data.userName.length !== 0
const existClassName = this.data.className.length !== 0
const existPhoneNumber = this.data.phoneNumber.length !== 0
const existGender = this.data.mygender.length !== 0
const existArea = this.data.schoolarea.length !== 0
// console.log('studentNumber', existStudentNumber)
// console.log('userName', existUserName)
// console.log('className', existClassName)
// console.log('phoneNumber', existPhoneNumber)
// console.log('mygender', existGender)
// console.log('schoolarea', existArea)
if (existStudentNumber && existUserName && existClassName && existPhoneNumber && existGender && existArea && !this.data.rePwdEqual && !this.data.phoneLength && !this.data.phoneFormat) {
if (this.data.password === this.data.repassword && this.data.password !== '') {
// 发起网络请求
wx.request({
url: 'http://api/user/register',
method: 'post',
data: {
student_number: this.data.studentNumber,
class_name: this.data.className,
name: this.data.userName,
phone_number: this.data.phoneNumber,
gender: this.data.mygender,
area: this.data.schoolarea,
password: this.data.password,
second_password: this.data.repassword
},
header: {
'content-type': 'application/x-www-form-urlencoded'
},
success(res) {
console.log(res)
if (res.data.code === 200) {
wx.showToast({
title: '注册成功！',
icon: 'success'
})
wx.redirectTo({
url: '/pages/user-login/user-login'
})
} else {
wx.showToast({
title: '注册失败！',
icon: 'none'
})
console.log('注册失败！')
console.log(res)
}
},
fail(msg) {
console.log(msg)
}
})
}
} else if (!existStudentNumber) {
wx.showToast({
title: '学号不能为空！',
icon: 'none'
})
} else if (!existUserName) {
wx.showToast({
title: '用户名不能为空！',
icon: 'none'
})
} else if (!existClassName) {
wx.showToast({
title: '班级不能为空！',
icon: 'none'
})
} else if (!existPhoneNumber) {
wx.showToast({
title: '手机号不能为空！',
icon: 'none'
})
} else if (!existGender) {
wx.showToast({
title: '请选择性别！',
icon: 'none'
})
} else if (!existArea) {
wx.showToast({
title: '请选择所在校区！',
icon: 'none'
})
} else {
wx.showToast({
title: '请按提示输入相关信息！',
icon: 'none'
})
}
},
/**
* 生命周期函数--监听页面加载
*/
onLoad: function (options) {
},
/**
* 生命周期函数--监听页面初次渲染完成
*/
onReady: function () {
},
/**
* 生命周期函数--监听页面显示
*/
onShow: function () {
},
/**
* 生命周期函数--监听页面隐藏
*/
onHide: function () {
},
/**
* 生命周期函数--监听页面卸载
*/
onUnload: function () {
},
/**
* 页面相关事件处理函数--监听用户下拉动作
*/
onPullDownRefresh: function () {
},
/**
* 页面上拉触底事件的处理函数
*/
onReachBottom: function () {
},
/**
* 用户点击右上角分享
*/
onShareAppMessage: function () {
}
})

总结

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