check if is array js code example

Example 1: validate array javascript

Array.isArray([1, 2, 3]);  // true
Array.isArray({foo: 123}); // false
Array.isArray('foobar');   // false
Array.isArray(undefined);  // false

Example 2: javascript check if is array

var colors=["red","green","blue"];

if(Array.isArray(colors)){
    //colors is an array
}

Example 3: js check if array

Array.isArray([1, 2, 3]);	// true
Array.isArray('asdf');		// false

Example 4: js check if is array

if(Array.isArray(colors)){
    //colors is an array
}

Example 5: how to check if something is array javascript

function isArray(value) {
    return Object.prototype.toString.call(value) === "[object Array]";
}

Example 6: how to check if array

// Check if something is an Array 
// just like you do with "typeof"
Array.isArray([1, 2, 3]);	// true
Array.isArray('asdf');		// false