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