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16

Getting index of an array's element based on its properties

rated 0 times [ 18] [ 2] / answers: 1 / hits: 40676 / 12 Years ago, sun, september 23, 2012, 12:00:00

I have a JavaScript array of objects like this:

var myArray = [{...}, {...}, {...}];

Each object has unique id among other properties:

{ 

  id: 4,

  property1: 'something',

  property2: 'something'

}

How can I get an index of a particular object in that array, if I only know its id property? So if I know that myArray[x].id == 4, how can I find x?

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madelyn

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answered 12 Years ago shamya · Accepted Answer

var index = myArray.map(function(el) {

  return el.id;

}).indexOf(4);

For IE below version 9, map need a patch, or just use a loop.