How to Check if a Specific Element Exists in a Set in JavaScript ?
To check if a specific element exists in a Set
in JavaScript, you can use the has
method. The has
method returns a boolean indicating whether an element with the specified value exists in the Set
Syntax:
myset.has(value);
Parameters:
- value: It is the value of the element that has to be checked if it exists in the Set.
Example 1: Here, we have checked whether “yellow” exists in tempset or not, as it is present we got the output as true.
The has( ) method takes one value as a parameter and checks whether it is present in the set given or not.
Javascript
let tempset = new Set(); tempset.add( "red" ); tempset.add( "green" ); tempset.add( "blue" ); tempset.add( "yellow" ); tempset.add( "digitalvasanth" ); console.log(tempset.has( "yellow" )); |
Output
true
Example 2: Here, we have passed 99 to has( ) , which is not present in tempset, so it returned false as output.
Javascript
let tempset = new Set(); tempset.add(80); tempset.add(88); tempset.add(90); tempset.add(77); console.log(tempset.has(99)); |
Output
false
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