javascript - 解析后保持对象在 JSON 字符串中的顺序

Question

我从 API 函数收到以下 JSON 字符串。

"Inbound": {
    "callRelatedFields": ["ANI",
    "DNIS"],
    "objects": {
        "Contact": [{
            "displayName": "Name",
            "apiName": "Name"
        },
        {
            "displayName": "Email",
            "apiName": "Email"
        }],
        "Account": [{
            "displayName": "Account Name",
            "apiName": "Name"
        },
        {
            "displayName": "Phone",
            "apiName": "Phone"
        },
        {
            "displayName": "Fax",
            "apiName": "Fax"
        }],
        "cnx__Phone__c": [{
            "displayName": "Phone Name",
            "apiName": "Name"
        },
        {
            "displayName": "Phone Number Line 1",
            "apiName": "cnx__Phone_Number_Line_1__c"
        },
        {
            "displayName": "Phone Number Line 2",
            "apiName": "cnx__Phone_Number_Line_2__c"
        },
        {
            "displayName": "Type",
            "apiName": "cnx__Type__c"
        },
        {
            "displayName": "Location",
            "apiName": "cnx__Location__c"
        },
        {
            "displayName": "Call Manager",
            "apiName": "cnx__Call_Manager__c"
        },
        {
            "displayName": "Mac Address",
            "apiName": "cnx__Mac_Address__c"
        }]
    },
    "screenPopSettings": {
        "screenPopsOpenWithin": "ExistingWindow",
        "SingleMatch": {
            "screenPopType": "PopToEntity"
        },
        "NoMatch": {
            "screenPopType": "DoNotPop"
        },
        "MultipleMatches": {
            "screenPopType": "DoNotPop"
        }
    }
}

"objects" 中对象的顺序很重要!但是当我用 JSON.parse 解析这个 JSON 字符串时，这些对象的顺序丢失了。

有什么好的方法可以在解析后保持这些对象的顺序。

我试图操纵字符串并将整个 “objects” 转换为一个数组，但事实证明这变得太复杂和 hacky。

Answer 1

我怀疑让您认为键已更改顺序的是 Chrome 开发工具显示的对象的键按字母顺序排序。而如果您使用 Object.keys() 或等效的 JS 手动遍历键，您会发现它们按照它们在 JSON 字符串中定义的顺序出现。

这是 Object.keys() 的等效 JS :

function objectKeys(obj) {
    var keys = [];
    if (!obj) return keys;
    for (var key in obj) {
        if (obj.hasOwnProperty(key)) {
            keys.push(key);
        }
    }
}

当我用解析对象的 objects 部分调用它时，我得到以下数组:

["Contact", "Account", "cnx__Phone__c"]