How to check if a Specific Item is present in the Set in TypeScript - Step by Step Examples

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How to check if a Specific Item is present in the Set in TypeScript ?

Answer

To check if a specific item is present in a Set in TypeScript, you can use the has method.

✐ Examples

1 Check if Item is Present

In this example,

We define a Set object named mySet containing elements of a specific type.
We use the has method of the Set to check if a specific item is present.
The has method returns true if the item is present in the Set, otherwise it returns false.
Finally, we print the result to standard output.

TypeScript Program

// Define Set with items
const mySet: Set<string> = new Set(["apple", "banana", "orange", "grape", "melon"]);

// Check if item is present
const item: string = "banana";
const isPresent: boolean = mySet.has(item);

// Print result
console.log(`Is ${item} present in the Set? ${isPresent}`);

Output

Is banana present in the Set? true

2 Check if Item is Not Present

In this example,

We define a Set object named mySet containing elements of a specific type.
We use the has method of the Set to check if a specific item is not present.
The has method returns false if the item is not present in the Set.
Finally, we print the result to standard output.

TypeScript Program

// Define Set with items
const mySet: Set<string> = new Set(["apple", "banana", "orange", "grape", "melon"]);

// Check if item is not present
const item: string = "peach";
const isNotPresent: boolean = !mySet.has(item);

// Print result
console.log(`Is ${item} not present in the Set? ${isNotPresent}`);

Output

Is peach not present in the Set? true

Summary

In this tutorial, we learned How to check if a Specific Item is present in the Set in TypeScript language with well detailed examples.

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How to check if a Specific Item is present in the Set in TypeScript - Step by Step Examples

How to check if a Specific Item is present in the Set in TypeScript ?

Answer

✐ Examples

1 Check if Item is Present

TypeScript Program

Output

2 Check if Item is Not Present

TypeScript Program

Output

Summary

More TypeScript Sets Tutorials