Bootstrap plugin
Integrate with the Bootstrap framework
Usage
The following piece of code is the starting point to validate the form made in Bootsrap 4:
<html>
<head>
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/twitter-bootstrap/4.3.1/css/bootstrap.min.css" />
<link rel="stylesheet" href="/vendors/@form-validation/umd/styles/index.min.css" />
</head>
<body>
<form id="demoForm" method="POST">...</form>
<script src="https://cdnjs.cloudflare.com/ajax/libs/es6-shim/0.35.3/es6-shim.min.js"></script>
<script src="/vendors/@form-validation/umd/bundle/popular.min.js"></script>
<script src="/vendors/@form-validation/umd/plugin-bootstrap/index.min.js"></script>
<script>
document.addEventListener('DOMContentLoaded', function(e) {
FormValidation.formValidation(
document.getElementById('demoForm'),
{
fields: {
...
},
plugins: {
bootstrap: new FormValidation.plugins.Bootstrap(),
...
},
}
);
});
</script>
</body>
</html>
The sample code above assumes that the FormValidation files are placed inside the vendors directory. You might need to change the path depending on where you place them on the server.
The next sections list out some examples of various forms made with Bootstrap 4.
Using the npm packages
If you are using a bundler such as
Webpack,
Rollup,
Parcel or
Vite, etc., to bundle
your application, then it's recommended to use the FormValidation NPM packages.
$ npm install @form-validation/bundle
$ npm install @form-validation/plugin-bootstrap
- Import and use the Bootstrap plugin:
import { formValidation } from '@form-validation/bundle/popular';
import { Bootstrap } from '@form-validation/plugin-bootstrap';
formValidation(
document.getElementById('demoForm'),
{
fields: {
...
},
plugins: {
bootstrap: new Bootstrap({
...
}),
...
},
}
);
Horizontal form
Stacked form
Inline form
Form without label
Multiple fields on the same row
In order to add the correct class for error message and the field element when it is a valid or invalid, we need to specify the CSS selector of the field container.
By default, the Bootstrap plugin will look for the .form-group element. In the following example, the firstName and lastName fields are placed inside .col-sm-4 containers. Meanwhile, the city, state and zipcode fields can be found inside the .col-sm-3 containers.
The rowSelector option will be used to help the plugin determine the field containers as following:
bootstrap: new FormValidation.plugins.Bootstrap({
rowSelector: function(field, ele) {
switch (field) {
case 'firstName':
case 'lastName':
return '.col-sm-4';
case 'city':
case 'state':
case 'zipcode':
return '.col-sm-3';
default:
return '.form-group';
}
}
}),
Multiple fields on the same row
Changelog
- Fixed the duplicated icons when using the Icon plugin with Bootstrap 4.3