How to add json data to js array and the difference between js array and json_javascript skills

JSON (JavaScript Object Notation) is a lightweight data exchange format that uses a completely language-independent text format. JSON is a JavaScript native data format.

The following will introduce two ways to add json data to js arrays.

// The first way

personInfo
: [],
for(var i = 0; i < _STAGE.passengerInfoArray.length; i++){
var name = _STAGE.passengerInfoArray[i];
var person = {v:name, text:name};
this.personInfo.push(person);
}

// The second way

var passengerInfo = {};
passengerInfo.psgTypeDesc = psgTypeDesc;
passengerInfo.flightPrice = flightPrice;
_STAGE.passengerInfoArray.push(passengerInfo);

The difference between js array and json

1, array

1. Define one-dimensional array: var s1=new Array();

s1=[1,2,3,4] or s1[0]=1,s1[1]=2,s1[3]=3,s1[4]=4;
alert(s1[0]);

The result is 1;

2. Define the two-dimensional element group: var s1=new Array();

var s1=[[3,1],[2,3,4],3,[4,5,6,7,8]];
alert(s1[1][0]);

The result is 2;

2. Define json object

1, json object

 var status_process = {
       " name5" : '闲置期',
     "name1" : '播种期',
     "name2" : '苗期',
     "name3" : '生长期',
     "name4" : '采收期'
    }    
   alert(status_process);

The result is: Object:Object;

2, json string

The so-called json string means that the value of the string variable has the same format as json, but is not a json object, such as:

       var s1="{";
       var s2 = " 'name5' : '闲置期',  'name1' : '播种期','name2' : '苗期','name3' : '生长期','name4' : '采收期'";
       var s3="}";
       var status_process=s1+s2 +s3；

Although the value of status_process conforms to the format of a json object, it is not an object, it is just a string (pieced together);

Convert the string to a json object using the function eval, eval("(" status_process ")");

Conclusion: What is passed from the background to the foreground is a json string, not a real json object, so it needs to be converted using the eval function.

3. Use of json objects

var status_process = {
      name5 : '闲置期',
     name1 : '播种期',
     name2 : '苗期',
      name3 : '生长期',
      name4 : '采收期'
     };
     alert(status_process["name5"]);
     alert(status_process.name5);

Both are: idle period

4.json two-dimensional object

var status_process = {
 name5 : {name3:'空闲闲置期'},
 name1 : '播种期',
 name2 : '苗期',
 name3 : '生长期',
 name4 : '采收期'
};
alert(status_process["name5"]["name3"]);
alert(status_process.name5.name3);

The results are: 'Idle idle period'