I have the following array of objects :
var objs = [{id: 1, name: 'foo', ...},
{id: 2, name: 'bar', ...},
{id: 3, name: 'baz', ...}];
and this variable :
var matcher = 'bar';
What is the easiest way to get the object that has the matcher equals to its name ?
Using this matcher the result should be :
{id: 2, name: 'bar', ...}
The easiest way is to use filter function
var objs = [{id: 1, name: 'foo'},
{id: 2, name: 'bar'},
{id: 3, name: 'baz'}];
var matcher = 'bar';
var result = objs.filter(function(obj) {
return obj.name === matcher;
});
console.log(result); // [{id: 2, name: 'bar'}]
console.log(result[0]); // {id: 2, name: 'bar'}
The easiest way is probably using a library which allows some higher level functions on objects, such as filter.
Such libraries are for example underscore and lodash, both reserving the _ sign for use, with which you'd write:
_(objs).filter(function(element){return element.name === matcher})[0];
(The filter function returns the elements of an array or objects for which the given filtering function returns true - in this case, you're checking whether the name equals your matcher. The return value is an array of these elements, hence the [0] part)
EDIT: I didn't notice you had an array to begin with, then you don't even need an external library, arrays by default have the filter method on them.
$.grep, Another one suggestsArray.prototype.filter. Developers still use them. You just want to filter an object in array, a simple, very oldforloop can do this too. There is no need to use a 2015 tech for it. And the point of marking as duplicate is not "soling" a question.