Answers for "how to check a variable is object or array in javascript"

Javascript is object array

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

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

How to check if an object is an array or not?

var arrayList = [1 , 2, 3];
console.log(Array.isArray(arrayList)) // true
// method 1
if(Array.isArray(arrayList)){
    console.log("is array")
}
// method 2
if(Object.prototype.toString.call(arrayList) === '[object Array]') {
  console.log('Array!');
}

javascript is array or object

const data = [1,2,3,4,5];const isArray = Object.prototype.toString.call(data) === '[object Array]';console.log(isArray); // trueconst data = {id: 1, name: “Josh”};const isArray = Object.prototype.toString.call(data) === '[object Array]';console.log(isArray); // false

How can I check if an object is an array

In modern browsers you can do:

Array.isArray(obj)