Answers for "how can we add value in array if not exists javascript"

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-1

js add to array if not exists

var newItem = "NEW_ITEM_TO_ARRAY";
var array = ["OLD_ITEM_1", "OLD_ITEM_2"];

array.indexOf(newItem) === -1 ? array.push(newItem) : console.log("This item already exists");

console.log(array)

Posted by: Guest on August-05-2021

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