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  • js读取json数据

    {

        "code": 0,

        "msg": null,

        "data": {

            "pageNum": 1,

            "pageSize": 5,

            "total": 1,

            "pages": 1,

            "list": [

                {

                    "pid": "0ccddaed355211e79954005056b233c9",

                    "sectionId": "1234567",

                    "tid": "0cb966d1355211e79954005056b233c9",

                    "first": "1",

                    "parentId": null,

                    "title": "五一要事",

                    "userId": "123456",

                    "userName": "王俐",

                    "postLayer": 1,

                    "status": "0",

                    "createTime": 1494401186000,

                    "content": "五一放假通知",

                    "aids": null,

                    "attachments": [

                        {

                            "aid": "0710f56b355911e79954005056b233c9",

                            "tid": "0cb966d1355211e79954005056b233c9",

                            "pid": "0ccddaed355211e79954005056b233c9",

                            "fileType": "png",

                            "fileName": "11.png",

                            "fileSize": 85379,

                            "downloads": 0,

                            "attachmentUrl": "201705\a8ae2dd54f9d4c8aa7ead423f2578992.png",

                            "downloadUrl": "http://10.144.238.21:8080/starMOOC/forum/downloadFile/0710f56b355911e79954005056b233c9",

                            "previewUrl": "http://10.144.238.21:8080/starMOOC/forum/showImage/0710f56b355911e79954005056b233c9",

                            "uploadtime": 1494404183000,

                            "aids": null

                        }

                    ]

                }

            ],

            "firstPage": 1,

            "prePage": 0,

     

            "navigatepageNums": [

                1

            ]

        }

    }

    js读取JSON的方法我接触到的有两种:
    方法一:函数构造定义法返回
    var strJSON = "{name:'json name'}";//得到的JSON
    var obj = new Function("return" + strJSON)();//转换后的JSON对象
    alert(obj.name);//json name

    方法二:js中著名的eval函数
    var strJSON = "{name:'json name'}";//得到的JSON
    var obj = eval( "(" + strJSON + ")" );//转换后的JSON对象
    alert(obj.name);//json name

    第二种方法需要注意的是,对象表达式{'name':'json name'}必须用“()”扩住,否则
    var strJSON = "{name:'json name'}";
    var obj = eval(strJSON);
    alert(obj.constructor);//String 构造函数
    alert(obj.name);//undefine
    必须把对象表达式扩起来eval执行才能生成一个匿名对象!

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  • 原文地址:https://www.cnblogs.com/linsx/p/6877784.html
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