check if array contains value javascript code example
Example 1: check if array does not contain value javascript
var fruits = ["Banana", "Orange", "Apple", "Mango"];
var n = fruits.includes("Mango"); // true
var n = fruits.includes("Django"); // false
Example 2: javascript array contains
var colors = ["red", "blue", "green"];
var hasRed = colors.includes("red"); //true
var hasYellow = colors.includes("yellow"); //false
Example 3: javascript method to see if item exists in array
var fruits = ["Apple", "Banana", "Mango", "Orange", "Papaya"];
// Check if a value exists in the fruits array
if(fruits.indexOf("Mango") !== -1){
alert("Value exists!")
} else{
alert("Value does not exists!")
}
Example 4: javascript element in array
var fruits = ["Banana", "Orange", "Apple", "Mango"];
var n = fruits.includes("Mango");
Example 5: how to check if item is in list js
var myList=["a", "b", "c"];
mylist.includes("d")//returns true or false
Example 6: not in array js
!array.includes("element")