jQuery解析JSON数据

用$.getJSON方法，获得JSON数据和解析

从http://api.flickr.com/services/feeds/photos_public.gne?tags=cat&tagmode=any&format=json&jsoncallback=? 这个地址得到JSON数据 并且分析里面的结构，生成图片和相关链接等：

<script>
$(function(){ 
        var url=”http://api.flickr.com/services/feeds/photos_public.gne?tags=cat&tagmode=any&format=json&jsoncallback=?”
        $.getJSON( //使用getJSON方法取得JSON数据 
        url, 
        function(data){ //处理数据 data指向的是返回来的JSON数据 
                var tit=”<a href='”+ data.link +”‘>”+data.title +”<\/a>”; //生成标题和标题连接 
                $(“h1”).html(tit); //出现在指定位置H1 内 
                $(“#ginfo”).find(“p”).eq(0).html(data.modified);  
                $(“#ginfo”).find(“p”).eq(1).html(data.generator); 
                var lis=””; 　//li 列表项目 
                $(data.items).each(function(i,ite){ //遍历JSON数据得到所需形式 
                    lis+=”<li>”; 
                    lis+=”<a href='”+ ite.link +”‘><img src='”+ite.media.m +”‘ title='”+ ite.title +”‘><\/><\/a>”; 
                    lis+=”<div>”; 
                    lis+=ite.description;                 
                    lis+=”<\/div><\/li>”;                 
                    }) 
                $(“ul”).html(lis);   　//将遍历出来的数据呈现在所需位置 
                $(“li”).hover(function(){$(this).addClass(“hov”)}, function(){$(this).removeClass(“hov”)});     
        } 
        ) 
  })
</script>

<div class=”main”>
    <div class=”ginfo” id=”ginfo”>     
        <h1></h1>
        <p></p>
        <p></p>
   </div>
   <ul>        
   </ul>
</div>
<!– json字符串
({       
 “title”: “Recent Uploads tagged cat”,        
 “link”: “http://www.flickr.com/photos/tags/cat/”,        “description”: “”,   
      “modified”: “2009-08-03T01:50:45Z”,        
 “generator”: “http://www.flickr.com/”,        
 “items”   
     {           
  “title”: “DSC06844”,        
     “link”: “http://www.flickr.com/photos/g_bugel/3783605340/”,             
“media”: {“m”:”http://farm3.static.flickr.com/2638/3783605340_a3cfc9eeb9_m.jpg”},            
 “date_taken”: “2009-07-06T07:27:59-08:00”,           
 “description”: “<p><a href=\”http://www.flickr.com/people/g_bugel/\”>g.bugel<\/a> posted a photo:<\/p> <p><a href=\”http://www.flickr.com/photos/g_bugel/3783605340/\” title=\”DSC06844\”><img src=\”http://farm3.static.flickr.com/2638/3783605340_a3cfc9eeb9_m.jpg\” width=\”240\” height=\”180\” alt=\”DSC06844\” /><\/a><\/p> “,          
   “published”: “2009-08-03T01:50:45Z”,          
   “author”: “nobody@flickr.com (g.bugel)”,          
   “author_id”: “38658309@N00”,            
   “tags”: “china cat feline beijing 2009 chinalab chinalab2009”       
 },{……});
–>

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