JavaScript Form Validation and Data Handling

JavaScript form validation! Learn how to get, prepopulate, and validate form data.

๐Ÿ“ Getting Form Data One of the most basic tasks when working with forms in JavaScript is retrieving the data entered by the user. You can easily access form data by selecting the form elements and using the value property. Example: <form id=”myForm”> <input type=”text” id=”name” name=”name” placeholder=”Enter your name”> <input type=”email” id=”email” name=”email” placeholder=”Enter your email”> <button type=”submit”>Submit</button> </form> <script> const form = document.getElementById(‘myForm’); form.addEventListener(‘submit’, function(event) { event.preventDefault(); // Prevent form submission to keep it on the page let name = document.getElementById(‘name’).value; let email = document.getElementById(’email’).value; console.log(‘Name:’, name, ‘Email:’, email); }); </script> In this example, when the form is […]

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๐Ÿ–ฑ๏ธ Accessing an Event: List of Event Listeners JavaScript

Learn how to add, access, loop, and handle List of Event Listeners JavaScript effectively.

๐ŸŽฏ Introduction to Events in JavaScript In JavaScript, events are actions or occurrences that happen in the system, usually as a result of user interactions, such as clicking a button, typing on a keyboard, or moving the mouse. These events trigger the execution of specific event listeners. Event listeners allow JavaScript to “listen” for specific events and execute a function when those events occur. ๐Ÿ“ Adding Event Listeners The most common way to add an event listener in JavaScript is through the addEventListener() method. This method attaches an event to an element, allowing JavaScript to react to that event. Syntax: […]

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