Wechat applet change attribute value -setdata- bidirectional binding -model

How to change the properties of an array and object ？

1、 Change the value in the array 
 set up  paraList:[{
    txt:'123',chose:false},{
    txt:'1234',chose:false}]

let choseChange = "paraList[" + index + "].chose"

_this.setData({
    

[choseChange]: true,

numList: numList

})

 You can change the value of a specific subscript in the array 

2、 Change the value in the object 

userInfo: {
     //  User authentication information 

sex: '',

name: '',

phone: '',

code: '',

sexTxt:' Please choose your gender ',

nameTxt:' Name cannot be empty ',

phoneTxt: ' Cell phone number cannot be empty ',

codeTxt: ' Get verification code ',

codeErrTxt:' Verification code cannot be empty '

},

let userSex = "userInfo.sex"

_this.setData({
    

[userSex]: '1'

})

 Can be changed separately userInfo Medium sex value 

(1) In non custom components 
	<input model:value="{
    { attribute }}" />
		 I won't support it data in . The way of writing path 
		 Such as :<input model:value="{
    { a.b }}" />
(2) Custom components Components in 
	1、 Define the format of the passed in attribute 
		Component({
    
		  properties: {
    
		    myValue: String
		  }
		})
	
	2、 Used in components 
		<input model:value="{
    {myValue}}" />
	
	3、 Where this component is referenced 
		<custom-component model:my-value="{
    { attribute }}" />	my-value Can be any field , In the component, it should be written in the form of hump 

https://blog.csdn.net/Shids_/article/details/125538656