WeChat Mini Program) Form Validation Development 2

In the previous article, we shared with you WeChat Mini Program Form Component Sharing 1 . In this article, we mainly share with you the WeChat Mini Program) Form Validation Development 2. We hope it can help everyone.

1. Knowledge points

1. Whether it is empty

if(e.detail.value.userName.length==0||e.detail.value.psw.length==0||e.detail.value.tel.length==0){
	      	this.setData({
	        	tip:'提示：不能为空！',
	      	})
    	}

2. Regular expression:

Mobile phone number: var regtel=new RegExp('(^1[3|4|5|7|8][0-9]{9}$)','g' );

<input>

 if(!regtel.exec(e.detail.value.tel)){
    		this.setData({
	        	tip:'手机号码格式不正确！',
	      	})
    	}

2. Look at the examples

##1.index.wxml

<form bindsubmit="formSubmit" bindreset="formReset">
	<view class="section">
		<view class="section__title">姓名：</view>
		<input name="userName" placeholder="请输入姓名"  maxlength="12" type="text" focus="false" class="section__iput"/>
	</view>
	<view class="section">
  		<view class="section__title">手机号码：</view>
  		<input  name="tel" placeholder="请输入手机号码"  type="text" focus="false" class="section__iput"/>
	</view>
	<view class="section">
  		<view class="section__title">密码：</view>
  		<input name="psw" placeholder="请输入您的密码" password="true" maxlength="12" type="text" focus="false" class="section__iput"/>
	</view>
	<view class="section section_gap">
		<view class="section__title">性别：</view>
		<radio-group name="radio-group">
			<label><radio value="radio1" checked="ture"/>男</label>
			<label><radio value="radio2"/>女</label>
		</radio-group>
	</view>
	<view class="section">
  		<view class="section__title">日期:</view>
	  	<picker mode="date" value="{{date}}" start="2015-09-01" end="2017-09-01" bindchange="bindDateChange" class="section__iput">
	    	<view class="picker">
	     	{{date}}
	    	</view>
	  	</picker>
	</view>
	<view class="section">
		<view class="section__title">留言：</view>
	  	<textarea auto-height placeholder="请输入内容" />
	</view>
	<view>{{tip}}</view>
	<view class="btn-area">
		<button formType="submit" type="primary">Submit</button>
		<button formType="reset"  type="default">Reset</button>
	</view>
</form>

2.index.wxss

.section{
	margin:10px 20px; 
	display:flex;
	border-bottom:1px solid #ccc;
	padding:15px 0;
}
.section__title{
	width:30%;
}
.section__iput{
	width:70%;
	line-height:25px;
	border:1px solid #ccc;
}
.btn-area{
	display:flex;
	justify-content:center;
	margin:20px;
}
.btn-area button{
	width:40%;
}

3.index.js

var app = getApp()
Page({
	data: {
	    date: '2016-09-01',
	    tip:'',
	},
	//日期
	bindDateChange: function(e) {
	    this.setData({
	      date: e.detail.value
	    })
	},
	//提交
	formSubmit: function(e) {
		var regtel=new RegExp('(^1[3|4|5|7|8][0-9]{9}$)','g');
		if(e.detail.value.userName.length==0||e.detail.value.psw.length==0||e.detail.value.tel.length==0){
	      	this.setData({
	        	tip:'提示：不能为空！',
	      	})
    	}else if(!regtel.exec(e.detail.value.tel)){
    		this.setData({
	        	tip:'手机号码格式不正确！',
	      	})
    	}else{
    		this.setData({
	        	tip:'',
	      	})
    	}
	},
	//重置
	formReset: function() {
	    console.log('form发生了reset事件')
	}
})

There is better method, everyone is welcome to add. . .

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WeChat Mini Program Form Component Sharing 1

html about form components Detailed explanation of examples

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