WeChat applet input box detailed example code-Mini Program Development-php.cn

WeChat applet input box detailed example code

高洛峰

Release： 2017-03-21 16:57:20

Original

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This article mainly introduces the detailed explanation and simple examples of the input box of the WeChat applet. Friends in need can refer to the

implementation renderings:

WeChat applet input box detailed example code

WeChat applet input box input

##placeholder-Stringinput-placeholderSpecify the style class of placeholderdisabledBooleanfalseWhether to disablemaxlengthNumber140Maximum input length , when set to 0, there is no limit to the maximum length auto-focusBooleanfalseAuto focus, pull up keyboard. There can only be one input in the page that sets the auto-focus attributefocusBooleanfalseso that the input gets focusbindchangeEventHandleWhen the input box loses focus, the bindchange event is triggered, event.detail={value:value} bindinputEventHandleInput boxes other than date/time types trigger input events when keyboard input is made , event.detail={value:value}, the processing bindfocusEventHandleTriggered when the input box is focused, event.detail = {value:value}bindblurEventHandleTriggered when the input box loses focus, event.detail = {value:value}

AttributeName	Type	Default value	Description
value	String		Input The content of the box
type	String	text	Type of input, valid values: text, number, idcard, digit ,time,date
password	Boolean	false	Whether Is the password type
placeholder	String		Placeholder when the input box is empty
placeholder-style	String		Specify the style of placeholder
class





			function can directly return a string , which will replace the content of the input box.

Sample code:



 
 
 
 
 
 
 你输入的是：{{inputValue}}

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//input.js
Page({
 data:{
 focus:false,
 inputValue:""
 },
 bindButtonTap:function(){
 this.setData({
 focus:Date.now()
 })
 },
 bindKeyInput:function(e){
 this.setData({
 inputValue:e.detail.value
 })
 },
 bindReplaceInput:function(e){
 var value = e.detail.value;
 var pos = e.detail.cursor;
 if(pos != -1){
 //光标在中间
 var left = e.detail.value.slice(0,pos);
 //计算光标的位置
 pos = left.replace(/11/g,'2').length;
 }

 //直接返回对象，可以对输入进行过滤处理，同时可以控制光标的位置
 return {
 value:value.replace(/11/g,'2'),
 cursor:pos
 }

 //或者直接返回字符串,光标在最后边
 //return value.replace(/11/g,'2'),
 },
 bindHideKeyboard:function(e){
 if(e.detail.value === "123"){
 //收起键盘
 wx.hideKeyboard();
 }
 }
})

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