You can remove more than one item from an array at a time.
Follow the code:
var teste = [6,4,5];
//meu objectivo é remover os itens 4, 5 por ex
//removendo o item 4
teste.splice(1, 1)
//removendo o item 5
teste.splice(1, 2)
As you can see after I remove the first item the array is 'crazy' because it has one less item ie all indexes change
The first argument of splice is one index in the array, the second is the amount of items to remove from there.
So it looks like this:
var itens = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];
var indice = 2; // lembre que começa em zero, então esta é a posição do "c"
var quantidade = 3;
var removidos = itens.splice(indice, quantidade);
console.log(itens); // ["a", "b", "f", "g"]
console.log(removidos); // ["c", "d", "e"]
If you do not know the position of the items, you can remove items using the filter :
var itens = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];
var resultado = itens.filter(function(item) {
return item !== 'c' && item !== 'e';
});
console.log(resultado); // ["a", "b", "d", "f", "g"]
or so to make it easier:
var itens = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];
var remover = ['f', 'c'];
var resultado = itens.filter(function(item) {
return !~remover.indexOf(item);
});
console.log(resultado); // ["a", "b", "d", "e", "g"]
If you want to do a function to use other times:
function remover(array, rem) {
return array.filter(function(item) {
return !~rem.indexOf(item);
});
}
var original = ['a', 'b', 'c', 'd', 'e', 'f', 'g'];
var resultado1 = remover(original, ['f', 'c']);
var resultado2 = remover(original, ['a', 'e', 'g']);
console.log(resultado1); // ["a", "b", "d", "e", "g"]
console.log(resultado2); // ["b", "c", "d", "f"]
The first parameter is the one from which index will begin to be removed, and the second will be removed. In my example I'm saying:
Remove 1 element from position 1.
See working:
var fruits = [6,4,5];
fruits.splice(1, 1);
console.log(fruits);Source: W3Scholls