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I know to use eval() to parse JSON to an object, but how do I parse an object to JSON format using JavaScript?

Thanks.

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The newer browsers support JSON.stringify. You can also download and include it yourself.

var json = JSON.stringify(yourObject);

Afaik jQuery does not provide such a method.

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can JSON object easy to parse an json string to an object ?
It's not a simple task and I don't think jquery provides this. JSON is not supported in IE. json.org/json2.js will do what you need with JSON.stringify and JSON.parse. Ext-core has methods called Ext.encode and Ext decode which do the same thing sencha.com/products/core/docs/?class=Ext
@zjm1126: It don't know exactly what you mean, but JSON also provides the JSON.parse method. It is described on the site I linked to.
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Usually if you have a json and want to access something underneath it you just put a dot, like if the name of your json is msg and you want the location parameter it would be:

msg.location

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