TypeScript Array some() Method

Last Updated : 12 Jul, 2024

The Array.some() method in TypeScript is used to check if at least one element in the array passes the test implemented by the provided function.
Syntax:

array.some(callback[, thisObject])

Parameter: This method accepts two parameters as mentioned above and described below:

callback: This parameter is the Function to test for each element.
thisObject: This is the Object to use as this parameter when executing callback.

Return Value: This method returns true if some element in this array satisfies the provided testing function.

The below example illustrates the Array some() method in TypeScriptJS:

Example 1: Checking for Positive Numbers

In this example, the some() method checks if there is at least one positive number in the array.

TypeScript

let numbers: number[] = [-1, -2, 3, -4, -5];
let hasPositive = numbers.some(num => num > 0);
console.log(hasPositive); // Output: true

Output:

true

Example 2: Checking for String Length

In this example, the some() method checks if there is at least one string with a length greater than 5.

TypeScript

let words: string[] = ["hello", "world", "TypeScript", "JS"];
let hasLongWord = words.some(word => word.length > 5);
console.log(hasLongWord); // Output: true

Output:

true

TypeScript Array shift() Method

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Article Tags :

TypeScript Array some() Method

Example 1: Checking for Positive Numbers

Example 2: Checking for String Length

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