Check if your variable is an Array in Javascript.

Learn Different ways to check if a variable is array in Javascript.

Using Array.isArray()

Using toString() method in Object, this method convert the argument to specific type name,

If we pass Object.prototype.toString.call(1) returns "[object Number]" , so if we pass array then it results in "[object Array]" .

Using instanceof keyword

arr instanceof Array;

Using toString method on the variable

Let’s assume we have a variable a = 10 , when we call a.constructor.toString() it returns "function Number() { [native code] }” . Similarly if we pass array then instead of number it returns Array.

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