// inside if else check
if(Array.isArray(myVarToTest)) {
// myVatToTest is an array
} else {
// myVarToTest is not an array
}let names=['Jhon','David','Mark'];
console.log(Array.isArray(names));
// true
let user={id:1,name:'David'};
console.log(Array.isArray(user));
// false
let age 18;
console.log(Array.isArray(age));
// falseArray.isArray([]) //true
Array.isArray({}) //false
Array.isArray('') //false
Array.isArray(null) //falsevar data = ['a', 'b', 'c']
var isArray = Array.isArray(data)
console.log(isArray)var colors=["red","green","blue"];
if(Array.isArray(colors)){
//colors is an array
}let variable1 = [2, 3]
let variable2 = "test";
variable1.constructor === Array; // true
variable2.constructor === Array; // false