How to limit the number of selected checkboxes?

To limit the selection of checkboxes to a specific number, you can use JavaScript to handle the checkbox click events and prevent further selections once the limit is reached. Here’s an example of how you can achieve this: HTML: JavaScript (script.js): In this example, each checkbox has a class of “checkbox”. The JavaScript code adds … Read more

Remove Elements From an Array in Javascript

In JavaScript, you can remove elements from an array using several methods. Here are a few common approaches: 1. Using splice() method: The splice() method changes the contents of an array by removing or replacing existing elements. 2. Using filter() method: The filter() method creates a new array with all elements that pass the test … Read more

Search Box Inside Dropdown

create a select dropdown with search functionality using Bootstrap and the Select2 plugin is easy. Here are the simple code. HTML CSS BrijBrijpal Sharma is a web developer with a passion for writing tech tutorials. Learn JavaScript and other web development technology.

Select Dropdown with Search Box

First, include the required CSS and JavaScript files in your HTML file. You can host these files yourself or use a CDN. In this example, the select2 plugin is applied to the <select> element with the ID selectDropdown. You need to ensure that you have included the jQuery library before this script if it’s not … Read more

How to check if string matches regex in python

In Python, you can use the re module to work with regular expressions and check if a string matches a specific regex pattern. Here’s a basic example of how to do this: In this example, the re.match() function returns a match object if the input string matches the regex pattern, or None if it doesn’t. … Read more

How to Date Format in HTML?

To format dates in HTML, you can use JavaScript along with the built-in toLocaleDateString() method to customize the date format according to your requirements. Here’s an example of formatting a date in HTML using JavaScript: HTML: <p id=”date”></p> JavaScript: var dateElement = document.getElementById(“date”); var currentDate = new Date(); var formattedDate = currentDate.toLocaleDateString(“en-US”, { year: ‘numeric’, … Read more

JavaScript Regex Replace

JavaScript Regex Replace

To replace words using regular expressions in JavaScript, you can utilize the replace() method along with a regex pattern. Here’s an example: var str = “Hello, world! Hello, universe!”; var regex = /Hello/g; var replacement = “Hi”; var result = str.replace(regex, replacement); console.log(result); // Output: Hi, world! Hi, universe! In this example, we have a … Read more

Substring Regex in Javascript

In JavaScript, regular expressions can be used with the substring() method to extract substrings based on specific patterns. Here’s an example of using regular expressions with substring(): javascriptCopy codevar str = “Hello, World!”; var pattern = /Hello/g; var matches = str.match(pattern); if (matches) { var substring = str.substring(matches.index, matches.index + matches[0].length); console.log(substring); // Output: Hello … Read more