Question

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Javascript Objects: Dynamic variable names?

I have a json string passed in from a cgi script. This json string has a list of id’s. In javascript

var informationObj = jQuery.parseJSON(information);
tid = informationObj.idList[0].id;

tid is now an ID and I want to use it to access objects within the json string itself like so:

alert (informationObj.tid.rpath);

However this does not seem to work. I have also tried:

alert (informationObj.eval(tid).rpath);

Is there a way around this?

Thanks.

Answer 1

You need this form:

informationObj[tid].rpath

They are equivalent:

var a = 'something';
b[a] === b.something