从JavaScript中的JQuery.each（）返回对象

Question

I have this code in JavaScript

lastUpdated: 1492665454,
  items:

  [
    $.each(objectStory, function(key, value) {
      //key + ": " + value ;
      //console.log(value)
      console.log(JSON.stringify(value));
      //document.write(sitem);

      return JSON.stringify(value);
    }),
  ]

}]

the console.log is print the object as I wanted but the return function doesn't work. the data came from json file using ajax call . this is the return of consolg log

{"id":"87","type":"image","src":"url/IMG_2363.MOV"}

any help will be appreciated

Answer 1

$.each returns object that it was called with (for chaining with other methods), not string as you would wish. When you need result you should use map `. Please take a look at the snippet showing the difference:

 var objectStory = { k1: 1, k2: 2, k3: 3 } var eachResult = $.each(objectStory, function(key, value) { return JSON.stringify(value); }); var mapResult = $.map(objectStory, function(value) { return JSON.stringify(value); }); console.log(eachResult); console.log(mapResult); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 

In your code you should assign value to key items this way:

var obj = {
    // other fields
    items: $.map(objectStory, function(value) {
       return JSON.stringify(value);
    })
};

Otherwise you would have nested arrays under your items key.