javascript - 防止 javascript 改变 JSON 的顺序

Question

使用 JSON 数据，javascript 会更改对象的顺序:

{
    "01": { "disabled": 0, "factor": 10, "id": "01", "tickets": 0 },
    "02": { "disabled": 0, "factor": 10, "id": "02", "tickets": 0 },
    "03": { "disabled": 0, "factor": 10, "id": "03", "tickets": 0 },
    "04": { "disabled": 0, "factor": 10, "id": "04", "tickets": 0 },
    "05": { "disabled": 0, "factor": 10, "id": "05", "tickets": 0 },
    "06": { "disabled": 0, "factor": 10, "id": "06", "tickets": 0 },
    "07": { "disabled": 0, "factor": 10, "id": "07", "tickets": 0 },
    "08": { "disabled": 0, "factor": 10, "id": "08", "tickets": 0 },
    "09": { "disabled": 0, "factor": 10, "id": "09", "tickets": 0 },
    "10": { "disabled": 0, "factor": 10, "id": "10", "tickets": 0 },
    "11": { "disabled": 1, "factor": 40, "id": "11", "tickets": 0 }
}

对此:

{
    "10": { "disabled": 0, "factor": 10, "id": "10", "tickets": 0 },
    "11": { "disabled": 1, "factor": 40, "id": "11", "tickets": 0 },
    "01": { "disabled": 0, "factor": 10, "id": "01", "tickets": 0 },
    "02": { "disabled": 0, "factor": 10, "id": "02", "tickets": 0 },
    "03": { "disabled": 0, "factor": 10, "id": "03", "tickets": 0 },
    "04": { "disabled": 0, "factor": 10, "id": "04", "tickets": 0 },
    "05": { "disabled": 0, "factor": 10, "id": "05", "tickets": 0 },
    "06": { "disabled": 0, "factor": 10, "id": "06", "tickets": 0 },
    "07": { "disabled": 0, "factor": 10, "id": "07", "tickets": 0 },
    "08": { "disabled": 0, "factor": 10, "id": "08", "tickets": 0 },
    "09": { "disabled": 0, "factor": 10, "id": "09", "tickets": 0 }
}

请注意，即使在原始 JSON 中，开头的“10”和“11”行也位于末尾。

我用这个修复它:

var data = JSON.parse(json_data);
var keys = Object.keys(data).sort();

for ( var k in keys )
{
    var key = keys[k];
    var row = data[key];
    console.log(row);
};

如何防止javascript改变行的顺序？

那个错误(因为确实如此)让我很生气。 :-/

感谢您的帮助。

Answer 1

您应该检查bpierre的回答"Does JavaScript Guarantee Object Property Order?" .

总而言之，ECMAScript 中对象的定义是这样的

It is an unordered collection of properties [...]

在他的回答中，他建议在最新版本的 JavaScript 中使用 Map。

所以答案是否定的，你无法阻止 JavaScript 改变 JSON 的顺序，因为一开始就没有明确的顺序。