Snippets tagged “regex”

To check if a string contains a number and extract the number from the string in Java, you can use a combination of the matches method of the String class and the find method of the Matcher class.

java.lang.NumberFormatException: For input string: "N/A" occurs when you try to parse a string that cannot be converted to a number, such as the string "N/A".

Read this tutorial and learn several methods used to check if a string contains another substring in JavaScript or not. Read information and see examples.

Read and learn two methods used to check whether a string matches RegEx in JavaScript. Also, see which method is the fastest and differences between them.

PHP provides a range of extensions and functions for getting the number of pages in a PDF document. Let’s check out the most efficient ones, here.

To extract a substring from a string using a regular expression in Java, you can use the following steps:

On this page, you can find fast and simple solutions on how to get query string values in JavaScript. Just follow the examples given below to make it work.

To match "any character" in a regular expression, you can use the . (dot) character. The . character matches any single character, except for a newline.

Read this JavaScript tutorial and learn several methods that are used to remove spaces from a string. Also, know which is the fastest method to choose.

Sometimes, it is necessary to replace a given word inside a string in PHP. Here, we will consider three helpful functions that help to carry out the task.

Read this tutorial and learn a fast and easy solution to the issue of validating an email using JavaScript. Also, you will read about what the email is.

This tutorial explains how to validate an email using the PHP arsenal. Check out the examples of how to do that with the help of a PHP function and regex.

You can use the following regular expression to extract the YouTube video ID from a URL:

In PHP, you can use the preg_match() function to extract the string value of an HTML tag.

You can use the re module in Python to use regular expressions with the replace() method.

To create a regular expression that includes all special characters, you can use the following pattern:

There are several ways to detect a user's browser using PHP.

There are several ways to convert a string to a string array in Java. Here are a few options:

In Java, you can use the following regular expression to match any amount of whitespace: