How to remove elements/nodes from angular.js array
Solution 1:
There is no rocket science in deleting items from array. To delete items from any array you need to use splice: $scope.items.splice(index, 1);. Here is an example:
HTML
<!DOCTYPE html>
<html data-ng-app="demo">
<head>
<script data-require="[email protected]" data-semver="1.1.5" src="https://ajax.googleapis.com/ajax/libs/angularjs/1.1.5/angular.js"></script>
<link rel="stylesheet" href="style.css" />
<script src="script.js"></script>
</head>
<body>
<div data-ng-controller="DemoController">
<ul>
<li data-ng-repeat="item in items">
{{item}}
<button data-ng-click="removeItem($index)">Remove</button>
</li>
</ul>
<input data-ng-model="newItem"><button data-ng-click="addItem(newItem)">Add</button>
</div>
</body>
</html>
JavaScript
"use strict";
var demo = angular.module("demo", []);
function DemoController($scope){
$scope.items = [
"potatoes",
"tomatoes",
"flour",
"sugar",
"salt"
];
$scope.addItem = function(item){
$scope.items.push(item);
$scope.newItem = null;
}
$scope.removeItem = function(index){
$scope.items.splice(index, 1);
}
}
Solution 2:
For anyone returning to this question. The correct "Angular Way" to remove items from an array is with $filter. Just inject $filter into your controller and do the following:
$scope.items = $filter('filter')($scope.items, {name: '!ted'})
You don't need to load any additional libraries or resort to Javascript primitives.
Solution 3:
You can use plain javascript - Array.prototype.filter()
$scope.items = $scope.items.filter(function(item) {
return item.name !== 'ted';
});
Solution 4:
Because when you do shift() on an array, it changes the length of the array. So the for loop will be messed up. You can loop through from end to front to avoid this problem.
Btw, I assume you try to remove the element at the position i rather than the first element of the array. ($scope.items.shift(); in your code will remove the first element of the array)
for(var i = $scope.items.length - 1; i >= 0; i--){
if($scope.items[i].name == 'ted'){
$scope.items.splice(i,1);
}
}