Question

157

How can I build a json string in javascript/jquery?

rated 0 times [ 159] [ 2] / answers: 1 / hits: 57831 / 12 Years ago, fri, may 11, 2012, 12:00:00

I want to build a JSON string programmatically. The end product should be something like this:

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

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

var myParamsArray = [];

myParamsArray["first_name"] = "Bob";

myParamsArray["last_name"] = "Smith";

I wouldn't even mind building that array and then converting it to JSON.

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alejandro

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answered 12 Years ago jaycoborionc · Accepted Answer

You could do a similar thing with objects:

var myObj = {};

myObj[first_name] = Bob;

myObj[last_name] = Smith;

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

var json = JSON.stringify(myObj);

alert(json);

will show:

{first_name:Bob,last_name:Smith}

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.