I would like to know how I can identify whether or not an object is a array in Javascript.
I know that in jQuery there is the $.isArray function. But I'd like to learn to do this without jQuery .
I tried typeof and did not return the expected result.
Example:
typeof([]) // "object"
The Array.isArray () method returns true if an object is an array, and false if it is not.
Example: Array.isArray([]);
Source: link
// Antipadrão
frutas = new Array('banana', 'laranja', 'uva');
// Padrão Literal
frutas = ['banana', 'laranja', 'uva'];
//Usando o operador typeof podemos verificar o tipo retornado para a variável, e //conforme disse anteriormente, em Javascript um array é um objeto. Veja abaixo:
alert(typeof frutas); // object
//E usando o método isArray podemos verificar se o objeto é um array:
alert(Array.isArray(frutas)); // trueTypeof is a JavaScript Unary Operator. Exchanging as a kid, it's a native method in JavaScript that returns the type of an Operand.
You can try this:
Object.prototype.toString.call( list ) === '[object Array]' )
will return True or False
Another way:
[].constructor === Array