Dynamic forms using jQuery is an approach to create forms that allow adding or removing input fields dynamically using the jQuery library.
Dynamic forms are particularly useful when you want to allow users to input data with a variable number of fields or when you want to provide users with the ability to add or remove data entries as needed.
By using jQuery, you can easily and efficiently handle HTML element manipulation. You can add new input fields dynamically by clicking the “Add” button and remove unnecessary input fields by clicking the “Remove” button. You can accomplish all of these actions without having to refresh the web page.
Read Also: What is jQuery? History and Reasons to Use Library jQuery
In developing dynamic forms using jQuery, you will utilize functions such as append() and remove() to add and remove HTML elements, as well as set event handlers to handle user interactions.
Additionally, by combining jQuery with HTML, you can create responsive and user-friendly forms.
Example Code:
<!DOCTYPE html>
<html>
<head>
<title>Dynamic Form</title>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
</head>
<body>
<form id="dynamic-form">
<div id="form-container">
<div class="form-group">
<label for="name">Name:</label>
<input type="text" name="name[]" class="name">
<button type="button" class="remove">Remove</button>
</div>
</div>
<button type="button" id="add">Add</button>
<button type="submit">Submit</button>
</form>
<script>
$(document).ready(function() {
// Add new field
$("#add").click(function() {
var html = '<div class="form-group">';
html += '<label for="name">Name:</label>';
html += '<input type="text" name="name[]" class="name">';
html += '<button type="button" class="remove">Remove</button>';
html += '</div>';
$("#form-container").append(html);
});
// Remove field
$(document).on("click", ".remove", function() {
$(this).parent().remove();
});
// Submit form
$("#dynamic-form").submit(function(event) {
event.preventDefault();
// Get all name field values
var names = [];
$(".name").each(function() {
names.push($(this).val());
});
// Do something with the collected data
console.log(names);
});
});
</script>
</body>
</html>
In the above example, we use jQuery to add and remove input fields for names dynamically. When you click the “Add” button, the system creates a new HTML element and appends it to the specified location, such as the <div> container.
When the form is submitted, we use $(".name").each() to retrieve the values of all input fields with the class “name” and store them in the “names” array. You can replace the console.log(names); part with appropriate code to process the collected data from the form.
That’s a simple example of creating dynamic forms using jQuery. You can further customize and expand it according to your needs.
