如何在javascript / jquery中构建json字符串？ [英] How can I build a json string in javascript/jquery?

问题描述

我想以编程方式构建一个json字符串。最终产品应该是这样的：

I would like to build a json string programmatically. The end product should be something like:

var myParamsJson = {first_name: "Bob", last_name: "Smith" };

但是我想一次做一个参数。如果它是一个数组，我会做类似的事情：

However I would like to do it one parameter at a time. If it were an array, I would just do something like:

var myParamsArray = [];
myParamsArray["first_name"] = "Bob";
myParamsArray["last_name"] = "Smith";

我甚至不介意构建该数组然后转换为json。有什么想法？

I wouldn't even mind building that array and then converting to json. Any ideas?

推荐答案

你可以用对象做类似的事情：

You could do a similar thing with objects:

var myObj = {};
myObj["first_name"] = "Bob";
myObj["last_name"] = "Smith";

然后你可以使用 JSON.stringify 将该对象转换为JSON字符串的方法。

and then you could use the JSON.stringify method to turn that object into a JSON string.

var json = JSON.stringify(myObj);
alert(json);

将显示：

{"first_name":"Bob","last_name":"Smith"}

这种方法本身内置于所有现代浏览器中（即使IE8远非现代浏览器，IE8也支持它）。如果你需要支持一些旧版浏览器，你可以包括 json2.js 脚本。

This method is natively built into all modern browsers (even IE8 supports it, even if IE8 is very far from being a modern browser). And if you need to support some legacy browsers you could include the json2.js script.

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