原生 js ajax 获取到数据后转换为 json 对象的问题 - V2EX
dashixionglihai

原生 js ajax 获取到数据后转换为 json 对象的问题

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  •   dashixionglihai Apr 18, 2017 4005 views
    This topic created in 3334 days ago, the information mentioned may be changed or developed.

    用 js 原生写的 ajax ,获取到一个数据列表,顺序是正常的

    xmlHttp.responseText 这里的顺序是正常的

    但是当我将 json 字符串转换为 json 对象的时候,顺序就不是原先的顺序了

    var json = eval('(' + xmlHttp.responseText + ')');

    请问有啥办法转换完之后还是原先输出的顺序。

    5 replies    2017-04-18 14:29:45 +08:00
    QAPTEAWH
        1
    QAPTEAWH  
       Apr 18, 2017
    object 不保证顺序,请使用 array
    xss
        2
    xss  
       Apr 18, 2017
    hash 表本身就是无序的. 你如果想有序, 再加个数组记录你想输出的 key 顺序吧.
    U7Q5tLAex2FI0o0g
        3
    U7Q5tLAex2FI0o0g  
       Apr 18, 2017
    ajax 的参数加一个 type: 'json'
    服务端数据返回 json
    这样 ajax 的结果不用人为的再转 json
    试试看
    U7Q5tLAex2FI0o0g
        4
    U7Q5tLAex2FI0o0g  
       Apr 18, 2017
    #3 修正 是 dataType: 'json'
    dashixionglihai
        5
    dashixionglihai  
    OP
       Apr 18, 2017
    问题已经解决了,是我的后台返回的数据存在问题,我把 id 当作了 key ,转换的时候按照 id 从小到大的顺序排列了。
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