Question

我有以下JSON数组

 var feeds =   {"data":[{"id":"128811893769_10152115787143770"},{"id":"128811893769_10152115787143770"}]}

如何将新的密钥和值添加到json中，即（likes_count，share_count）

$.each(feeds.data, function (i, item) {
    $.getJSON("facebook_feeds.php?result_type=getCounts&id="+item.id, 
        function(summary) {                         
            var likesCount = summary[0].like_info.like_count;                      
            var shareCount = summary[0].share_info.share_count;             
        });
});

我想将键和值推送到feed数组

Answer 1

试试这个

  feeds.data.push({"likesCount": likesCount});
  feeds.data.push({"shareCount": shareCount});

Answer 2

有两种方法。
1.直接在item [项目持有当前feed.data元素]中添加likesCount和shareCount OR
2.使用jQuery的extend方法，（我不建议将它用于这样简单的事情）

$.each(feeds.data, function (i, item) {
    $.getJSON("facebook_feeds.php?result_type=getCounts&id="+item.id, 
        function(summary) {                         
            var likesCount = summary[0].like_info.like_count;                      
            var shareCount = summary[0].share_info.share_count;  

            // Approach 1
            item['likesCount'] =  likesCount;   
            item['shareCount'] =  shareCount;   
            // Approach 2
            $.extend ( item, { 'likesCount' : likesCount ,  'shareCount' : shareCount } );         
        });
});

Answer 3

push（）替代方案是联系替代方案，它使您有机会同时使用 jQuery 和 javascript

/*
 * Extend Array extra json
 * Example: 
 * $.extendArray([{a:1,b:2}],[{c:3,d:4}]) return -> [{a:1,b:2},{c:3,d:4}]
 * $.extendArray([{a:1,b:2}],{c:3,d:4}) return -> [{a:1,b:2},{c:3,d:4}]
 *
 */
$.extend({
  extendArray: function() {
    return Array.prototype.concat.apply([], arguments);
  }
});
// Array inside json 
var arr = $.extendArray([{a:1,b:2}],[{c:3,d:4},{e:4,f:5},{g:6,h:7}]);

console.log(arr);

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>

使用jquery将新元素附加到JSON数组

3 个答案: