Question

19

Getting a value of a certain JSON object field

rated 0 times [ 23] [ 4] / answers: 1 / hits: 17825 / 12 Years ago, mon, july 30, 2012, 12:00:00

I have the following JSON object:

var definitionsObject = {company : Some information about company};

This object will actually contain a lot of definitions, not just one. And I also have the following event handler for a link click which has a custom data-name attribute containing the term company:

$(.definitinOpener).click(function() {

      $this = $(this);

      var hintID = $this.attr(data-name);

      var hintText = definitionsObject.hintID;

});

So, what I'm trying to do is get the value of data-name custom attribute of the clicked link, go to the definitionsObject object and get the value of the field which is equal to the data-name attribute value. However in this way I'm always getting undefined.

Could anybody please help me to figure out what exactly I'm doing wrong?

Thank you beforehand.

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dorab

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4 Years ago

answered 12 Years ago kalias · Accepted Answer

You can look up a value in an object in two ways.

var obj = { key : 'value' }

var lookup = 'key'



console.log( obj.lookup ) //undefined

console.log( obj.key ) //value

console.log( obj[lookup] ) //value

You probably want this:

var hintText = definitionsObject[hintID];