How to Check if String contains only Alphabets in JavaScript - Step by Step Examples

How to Check if String contains only Alphabets in JavaScript ?

To check if a string contains only alphabets in JavaScript, you can use a regular expression.

In this example,

We create a string named str1 with a value of "HelloWorld".
We use a regular expression /^[a-zA-Z]+$/ to check if the string contains only alphabets.
The regular expression returns true if the string contains only alphabets, otherwise false.
Finally, we print the result to the console.

let str1 = 'HelloWorld';
let containsOnlyAlphabets = /^[a-zA-Z]+$/.test(str1);
console.log('String contains only alphabets:', containsOnlyAlphabets);

String contains only alphabets: true

In this example,

We create a string named str2 with a value of "Hello123".
We use a regular expression /^[a-zA-Z]+$/ to check if the string contains only alphabets.
The regular expression returns true if the string contains only alphabets, otherwise false.
Finally, we print the result to the console.

let str2 = 'Hello123';
let containsOnlyAlphabets = /^[a-zA-Z]+$/.test(str2);
console.log('String contains only alphabets:', containsOnlyAlphabets);

String contains only alphabets: false

In this tutorial, we learned How to Check if String contains only Alphabets in JavaScript language with well detailed examples.