使用JavaScript将JavaScript变量字符串转换为JSON

Question

我在JavaScript中有一个字符串，我想对键值对进行某种JSON 。 这是字符串

 {
    "questionId": null,
    "articleId": null,
    "questionText": "eewrr",
    "pollType": null,
    "selectedOptionIds": [],
    "pollOptionList": [{
        "optionId": 0,
        "questionId": 0,
        "optionText": "werwer",
        "selectedByUser": "N",
        "createdDate": null,
        "modifiedDate": null
    }, {
        "optionId": 0,
        "questionId": 0,
        "optionText": "werwer",
        "selectedByUser": "N",
        "createdDate": null,
        "modifiedDate": null
    }, {
        "optionId": 0,
        "questionId": 0,
        "optionText": "werwer",
        "selectedByUser": "N",
        "createdDate": null,
        "modifiedDate": null
    }, {
        "optionId": 0,
        "questionId": 0,
        "optionText": "werwe",
        "selectedByUser": "N",
        "createdDate": null,
        "modifiedDate": null
    }, {
        "optionId": 0,
        "questionId": 0,
        "optionText": "rwer",
        "selectedByUser": "N",
        "createdDate": null,
        "modifiedDate": null
    }],
    "pollId": 37
}

Answer 1

您可以使用JSON.parse（），请参见以下代码段以获取更多信息

 var json = JSON.parse('{"questionId":null,"articleId":null,"questionText":"eewrr","pollType":null,"selectedOptionIds":[],"pollOptionList":[{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwe","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"rwer","selectedByUser":"N","createdDate":null,"modifiedDate":null}],"pollId":37}') console.log(json); 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script> 

Answer 2

为此目的使用

   JSON.parse()

Answer 3

var your_str = '{"questionId":null,"articleId":null,"questionText":"eewrr","pollType":null,"selectedOptionIds":[],"pollOptionList":[{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwe","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"rwer","selectedByUser":"N","createdDate":null,"modifiedDate":null}],"pollId":37}';
var obj = JSON.parse(your_str);
alert(obj);
//or
console.log(obj);

这里your_str是您的json字符串。

Answer 4

您将需要将其解析为JSON对象，因此它将是：

JSON.parse('{"1": 1, "2": 2, "3": {"4": 4, "5": {"6": 6}}}', (key, value));

在您的情况下，它将是：

JSON.parse('{"questionId":null,"articleId":null,"questionText":"eewrr","pollType":null,"selectedOptionIds":[],"pollOptionList":[{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwer","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"werwe","selectedByUser":"N","createdDate":null,"modifiedDate":null},{"optionId":0,"questionId":0,"optionText":"rwer","selectedByUser":"N","createdDate":null,"modifiedDate":null}],"pollId":37}', key, value));

希望我能为您提供足够的信息

Answer 5

使用JSON.parse()将字符串转换为json和JSON.stringify()将json转换为字符串