Generally, the jQuery toggle() method is used to show and hide the HTML element on the web page. But if you don’t want to use the jQuery library, the toggle effect can be easily added using JavaScript. Using JavaScript you can check the visibility of an element and show/hide the HTML element based on their visibility.

When you want the full name input from the user, the input value must be checked whether the user provides a valid name (first name and last name). Using JavaScript, the full name validation can be easily implemented in the form to check whether the user provides their first name and last name. Use JavaScript test() method with Regular Expression to validate first name and last name.

When you working with the image dimensions, it’s always recommended to get the real width and height of the image. The naturalWidth and naturalHeight property provide an easy way to retrieve the original dimensions of the image using JavaScript. You can easily get the original size (width and height) of the image using JavaScript.

The window.onload event is very useful when you want to call a JavaScript function on page load without using jQuery. Generally, $( document ).ready() is used to execute the JavaScript code after Document Object Model (DOM) is ready. You can use the window.onload event to call and execute a JavaScript function on page load without using jQuery.

If you want to integrate copy to clipboard functionality on button click, JavaScript is the easiest option to do that. The HTML DOM execCommand() method provides a simple way to copy test to the clipboard. Use the copy command with document.execCommand() to copy text content to clipboard using JavaScript.

JavaScript replace() method search and replace the string with a specified value. Generally, JavaScript string replace() method replace only the first occurrence of a string. If you want to replace all the matching string from a string, Use replace() method with regular expression to replace all occurrences of a string in JavaScript.

Mostly, the confirmation popup is shown before processing the delete request. You can easily display a confirmation dialog using Window confirm() method in the client-side. You can also use confirm() method to show confirm box on anchor link click with onclick() event.

The setTimeout() method executes a function after some specified number of milliseconds. This function is ideal to make an Ajax call after a delay of few seconds. Use window setTimeout() method, you can set a delay in Ajax call for a specific time.

Generally, server-side language is used to get query string from URL. But you can also get query string parameters from URL to client-side. The query string parameters and values can be easily retrieved from the URL using JavaScript.