How to useArray.find() method in Typescript
The find() method returns the value of the first element in the provided array that satisfies the provided testing function. Otherwise, it returns undefined.
Syntax:
const foundString = myArray.find(item => item === "yourString");
const arrayContainsString = foundString !== undefined;
Example: In this example, we are using Array.find() method.
const myArray: string[] = ["apple", "banana", "orange"];
const searchString: string = "banana";
const foundString = myArray.find(item => item === searchString);
if (foundString) {
console.log(`Array contains the string '${searchString}'.`);
} else {
console.log(`Array does not contain the string '${searchString}'.`);
}
Output:
Array contains the string 'banana'.
How to Check Whether an Array Contains a String in TypeScript ?
To check whether an array contains a string in typescript we have a different approach. In this article, we are going to learn how to check whether an array contains a string in typescript.
Below are the approaches to check whether an array contains a string in typescript:
Table of Content
- Approach 1: Using Array.includes() method
- Approach 2: Using Array.indexOf() method
- Approach 3: Using Array.some() method
- Approach 4: Using Array.find() method
- Approach 5: Using Array.find() method with a boolean condition
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