What is the difference between element.push("value") and element[element.length]

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Hello. Whenever I need to add a new index in an array I use the second method, but I see some using the first one and I don’t know if there is any difference between them.

javascript

1 answer

5

The method push adds a value to the array and returns the new number of items.

var navegadores = ["Google Chrome", "Firefox"];
navegadores.push("Opera");
// retorno:  3

The second way you usually use takes the full size of the array navegadores.length and assigns a value in that position.

var navegadores = ["Google Chrome", "Firefox"];
navegadores[navegadores.length] = "Opera";
// retorno: Opera

It is recommended to push because it is already a native method for this function, and the syntax is clearer for those reading your code.

Recommended reading: MDN - Array.prototype.push()

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