Retrieve particular data points from the object based on its unique identifier

Hey there, I'm facing an issue with Angular where I need to retrieve a specific object from an array based on its ID. I'm quite lost on how to approach solving this problem.

var Obj = [
    { Id: "1", shape: "circle", color: "red" },
    { Id: "2", shape: "square", color: "orange" },
    { Id: "3", shape: "triangle", color: "yellow" },
    { Id: "4", shape: "circle", color: "green" },
    { Id: "5", shape: "sphere", color: "blue" },
    { Id: "6", shape: "hexagon", color: "indigo" },
    { Id: "7", shape: "square", color: "violet" },
    { Id: "8", shape: "triangle", color: "red" }
];

For instance, the function should look something like this:

And scope.result should be like:

scope.result = [
    { Id: "3", shape: "triangle", color: "yellow" }
];

Answer №1

Using a custom search function, you can utilize the filter method in JavaScript. For your specific case, the function would look like this:

function(item) { return item.Id === 3; }

Check out an example of this implementation in action on JSFiddle: Example in a fiddle

Answer №2

While I may not be a pro in Angular, one common way to find an item by its ID (or any other value) is by utilizing the filter function.

Check out this example below:

function findItemById(id, array) {
  // using the filter method 
  return array.filter(function (item) {
    // check if the item's Id matches the provided id
    return item.Id === id;
  // get the first matching item or return `null` if no match found
  })[0] || null;
}

To use the above function, follow this syntax:

var result = findItemById('3', array);

Answer №3

In case you are working with angularJS:

$scope.filteredResult = [];
angular.forEach(Object, function(val, k) {
    if (val.Id === "3"){
        $scope.filteredResult.push(val);
    }
});
alert(angular.toJson($scope.filteredResult));

I trust this information proves useful to you.

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