JavaScript: Array.isArray

Array.isArray(value)

Return true if value is a array object. (not a Array-Like Object .) Else, false.

// real array
console.log( Array.isArray ( ["a", "b"] ) );
// true

// array-like object
console.log( Array.isArray ( {0:"a", 1:"b" , length:2} ) );
// false