从JSON获取基于另一个字段的值而无需迭代-angular js

Question

How to get "value" from "name" from a json without iteration in Angular JS . For example I 've the following array with name and value field, how can I retrieve say "ABC" value based on name "a" without iteration in script?.

$scope.array = [{"name":"a","value":"ABC"},{"name":"b","value":"GHI"},{"name":"c","value":"EFG"}];

Can we do anything like this?

$scope.value = $scope.array.name["a"].value;

Answer 1

You can use filter instead of iterating:

$scope.array.filter(function(obj){ return (obj.name=="a"); })[0].value;//ABC

Although it also iterates over the array.

You can also use Underscore.js with these kinds of case, it has a find function like this:

_.find($scope.array, function(item) {
    return item.name == "a";
});

But the point is, all these features, use kind of iteration to give you what you want.