I have the following code snippet, which is executed when trying to insert an item in $scope.items{} :
$scope.items.forEach(function(item, i){
if(item.codigo == $('#codigo').val()){
item.quantidade = parseInt(item.quantidade) + parseInt($('#quantidade').val());
return;
}
});
However, if the condition is met, return does not interrupt the rest of the code.
Note: outside the loop works normally.
The return works only for the scope of the function being called, in this case it is forEach . To stop it, you must% conventional%:
for (var i = 0; i < $scope.items.length; i++) {
var item = $scope.items[i];
if(item.codigo == $('#codigo').val()){
item.quantidade = parseInt(item.quantidade) + parseInt($('#quantidade').val());
return;
}
}
If you want to find a specific item and move it, you have more appropriate methods, such as find :
var item = $scope.items.find(function(item) {
return item.codigo == $('#codigo').val();
});
item.quantidade = parseInt(item.quantidade) + parseInt($('#quantidade').val());
In ES-2015, cleaner:
let item = $scope.items.find( item => item.codigo == $('#codigo').val() );
item.quantidade = parseInt(item.quantidade) + parseInt($('#quantidade').val());
All functions in the iteration, such as Array.prototype forEach , map , reduce , filter and every , can not be interrupted. In each of them, the value of return is used for function dependent decision analysis. In the case of forEach , return is to jump to the next element of the array.
From the documentation for forEach :
There is no way to stop or break a forEach () loop other than by throwing an exception. If you need such behavior, the forEach () method is the wrong tool.
So if you want to iterate over a part, use the Sorack solution , which is a solution that gives you more freedom over array .