JavaScript: Set.prototype.has(value): Check for the existence of an element in the set

Set.prototype.has(value)

This method returns true, if the set has given element, else false.

HelloWorld.js

var countries =  new Set();

countries.add("India");
countries.add("Australia");
countries.add("Canada");
countries.add("Germany");

console.log("Is countries has India ? " + countries.has("India"));
console.log("Is countries has France ? " + countries.has("France"));

Output

Is countries has India ? true

Is countries has France ? false

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