isArray() in javascript - How to check is array or not

     The Array.isArray() method returns true if an object is an array, false if it is not. It will check the specified value is array or not, if it is array return true value and if not return false.

Syntax

   Array.isArray(variable or value);

Example

   var ar=[10,20,30];
   alert(Array.isArray(ar));

Example Program:- (Editor)

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Output:-

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