Bootstrap Radio Button Validation
Bootstrap Radio Button Validation:Bootstrap Radio Button Validation refers to the process of validating user selections in a group of radio buttons using Bootstrap, a popular front-end framework.
With Bootstrap, you can ensure that at least one radio button is selected before submitting a form. By applying the "required" attribute to the radio button group, the validation will trigger an error message if no option is chosen.
This feature helps ensure data integrity and improves user experience by preventing incomplete form submissions. By using Bootstrap's built-in validation capabilities, developers can easily implement radio button validation with minimal code.
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How can radio button validation be implemented using Bootstrap?
The provided code snippet represents a Bootstrap radio button validation. It includes a form with three radio buttons (Red, Blue, and Green), each wrapped in a form-check element.
The "required" attribute is added to the first radio button, making it mandatory to select an option before submitting the form
Bootstrap Radio Button Validation Example - 1
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<body>
<div class="container mt-4">
<h3>Select your favorite color:</h3>
<form>
<div class="form-group">
<div class="form-check">
<input class="form-check-input" type="radio" name="color" id="red" value="red" required>
<label class="form-check-label" for="red">
Red
</label>
</div>
<div class="form-check">
<input class="form-check-input" type="radio" name="color" id="blue" value="blue">
<label class="form-check-label" for="blue">
Blue
</label>
</div>
<div class="form-check">
<input class="form-check-input" type="radio" name="color" id="green" value="green">
<label class="form-check-label" for="green">
Green
</label>
</div>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
</div>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.1/dist/js/bootstrap.bundle.min.js"></script>
</body>
Output of Radio Button Validation
How can I implement Bootstrap radio button validation using a custom method?
This code snippet demonstrates how to implement radio button validation using Bootstrap. When the form is submitted, the JavaScript code prevents the default form submission behavior.
It then checks if any radio button in the group with the name "college" is checked. If no radio button is selected, an alert is displayed asking the user to select a college.
If a radio button is checked, the value of the selected college is displayed on the web page.
Bootstrap Radio Button Validation Example - 2
<body>
<div class="container mt-5">
<h3>Bootstrap Radio Button Validation</h3>
<form id="myForm">
<div class="form-group">
<label class="control-label">Select a USA college:</label>
<div class="radio">
<label><input type="radio" name="college" value="harvard">Harvard University</label>
</div>
<div class="radio">
<label><input type="radio" name="college" value="stanford">Stanford University</label>
</div>
<div class="radio">
<label><input type="radio" name="college" value="mit">Massachusetts Institute of Technology</label>
</div>
</div>
<button type="submit" class="btn btn-primary">Submit</button>
</form>
<p id="selectedCollege"></p>
</div>
<script src="https://code.jquery.com/jquery-3.6.0.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/bootstrap@5.2.1/dist/js/bootstrap.bundle.min.js"></script>
<script>
$(document).ready(function () {
$('#myForm').submit(function (event) {
event.preventDefault(); // Prevent the form from submitting
// Check if any radio button is checked
var selectedCollege = $('input[name="college"]:checked').val();
if (!selectedCollege) {
alert('Please select a college!');
return;
}
// Display the selected college on the web page
$('#selectedCollege').text('Selected College: ' + selectedCollege);
});
});
</script>
</body>