Validating Strings as Alphanumeric Symbols Using Regex in JavaScript
2025-05-09
To check if a string contains only alphanumeric symbols using regular expressions, use ^[ -~]+$ . This pattern matches strings composed of one or more alphanumeric symbols, such as "Hello, world!".
Validating Strings as Alphanumeric Using Regex in JavaScript
2025-04-27
To validate alphanumeric characters using regular expressions, use ^[a-zA-Z0-9]+$. This pattern matches strings composed of one or more alphanumeric characters, such as "3DModel".
Retrieve a substring from the end in JavaScript
2025-02-11
To extract a substring from the end of a string in JavaScript, you can use a regular expression to get the characters starting from the position which is the length of the string minus the length of the desired substring.
