Description
HTML Forms plays a major role in all web, windows, and mobile applications. Most of the companies are looking for single application for all the devices. With the help of Bootstrap, forsm can be made more responsive and stable without writing a single line of CSS code. In Bootstrap Form chapter, how to use Bootstrap form class in HTML forms is explained.
All the individual form controls, by default, receives some global styling with Bootstrap. All textual
<input>, <textarea>, and <select> elements with .form-control are set to width 100% by default. Wrap labels and controls in .form-group for optimum spacing. Layouts
Bootstrap provides three types of Layouts.
- Bootstrap Vertical Form ( it's default form and no need to specify other type )
- Bootstrap Horizontal Form ( add
.form-horizontalclass to<form>tag ) - Bootstrap Inline form ( add
.form-inlineclass to<form>tag )
Steps
- Always wrap the content in form tag.
- To improve form accessibility always set
<form>tag attributerole="form"eg:<form role="form"> - Place all the form controls in
.form-groupfor proper spacing between form elements. eg:<div class="form-group">
Example
Bootstrap form example is as follows.
[html]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>SPLessons - Bootstrp From</title>
<!-- Bootstrap -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2> <a href="http://www.splessons.com/lesson/bootstrap-3-tutorial/"> Bootstrap Vertical Form </a> </h2>
<form>
<div class="form-group">
<label for="exampleInputEmail1">Email address</label>
<input type="email" class="form-control" id="exampleInputEmail1" placeholder="Enter email">
</div>
<div class="form-group">
<label for="exampleInputPassword1">Password</label>
<input type="password" class="form-control" id="exampleInputPassword1" placeholder="Password">
</div>
<button type="submit" class="btn btn-default">Submit</button>
</form>
</div>
</body>
</html>
[/html]
Output:
Description
Add
.form-inline to form (which doesn't have to be a <form>) such that it is left-aligned and inline-block controls.
Note:
This only applies to forms within viewports that are at least 768px wide. Example
[html]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>SPLessons - Bootstrp From</title>
<!-- Bootstrap -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css" rel="stylesheet">
</head>
<body>
<div class="container">
<h2> <a href="http://www.splessons.com/lesson/bootstrap-3-tutorial/"> Bootstrap Inline form </a> </h2>
<form class="form-inline">
<div class="form-group">
<label for="exampleInputName2">Name</label>
<input type="text" class="form-control" id="exampleInputName2" placeholder="John Abraham">
</div>
<div class="form-group">
<label for="exampleInputEmail2">Email</label>
<input type="email" class="form-control" id="exampleInputEmail2" placeholder="me@johnab.com">
</div>
<button type="submit" class="btn btn-default">Send invitation</button>
</form>
</div>
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</body>
</html>
[/html]
Output:
Bootstrap Inline Form Another Example
[html]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>SPLessons - Bootstrp From</title>
<!-- Bootstrap -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2> <a href="http://www.splessons.com/lesson/bootstrap-3-tutorial/"> Bootstrap Inline form </a> </h2>
<form class="form-inline">
<div class="form-group">
<label class="sr-only" for="exampleInputAmount">Amount (in dollars)</label>
<div class="input-group">
<div class="input-group-addon">$</div>
<input type="text" class="form-control" id="exampleInputAmount" placeholder="Amount">
<div class="input-group-addon">.00</div>
</div>
</div>
<button type="submit" class="btn btn-primary">Transfer cash</button>
</form>
</div>
</body>
</html>
[/html]
Output:
Description
Use Bootstrap's predefined grid classes to align labels and groups of form controls in a horizontal layout by adding
.form-horizontal to the form (which doesn't have to be a <form>). Example
[html]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>SPLessons - Bootstrp From</title>
<!-- Bootstrap -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2> <a href="http://www.splessons.com/lesson/bootstrap-3-tutorial/"> Bootstrap Horizontal form </a> </h2>
<form class="form-horizontal">
<div class="form-group">
<label for="inputEmail3" class="col-sm-2 control-label">Email</label>
<div class="col-sm-10">
<input type="email" class="form-control" id="inputEmail3" placeholder="Email">
</div>
</div>
<div class="form-group">
<label for="inputPassword3" class="col-sm-2 control-label">Password</label>
<div class="col-sm-10">
<input type="password" class="form-control" id="inputPassword3" placeholder="Password">
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<div class="checkbox">
<label>
<input type="checkbox"> Remember me
</label>
</div>
</div>
</div>
<div class="form-group">
<div class="col-sm-offset-2 col-sm-10">
<button type="submit" class="btn btn-default">Sign in</button>
</div>
</div>
</form>
</div>
</body>
</html>
[/html]
Output:
Description
Bootstrap includes validation styles for error, warning, and success states on form controls. To use, add
.has-warning.has-error.has-success
Example
[html]
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1">
<!-- The above 3 meta tags *must* come first in the head; any other head content must come *after* these tags -->
<title>SPLessons - Bootstrp From</title>
<!-- Bootstrap -->
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/css/bootstrap-theme.min.css" rel="stylesheet">
<!-- jQuery (necessary for Bootstrap's JavaScript plugins) -->
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js"></script>
<!-- Include all compiled plugins (below), or include individual files as needed -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.4/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2> <a href="http://www.splessons.com/lesson/bootstrap-3-tutorial/"> Bootstrap Validation states </a> </h2>
<div class="form-group has-success">
<label class="control-label" for="inputSuccess1">Input with success</label>
<input type="text" class="form-control" id="inputSuccess1">
</div>
<div class="form-group has-warning">
<label class="control-label" for="inputWarning1">Input with warning</label>
<input type="text" class="form-control" id="inputWarning1">
</div>
<div class="form-group has-error">
<label class="control-label" for="inputError1">Input with error</label>
<input type="text" class="form-control" id="inputError1">
</div>
<div class="has-success">
<div class="checkbox">
<label>
<input type="checkbox" id="checkboxSuccess" value="option1">
Checkbox with success
</label>
</div>
</div>
<div class="has-warning">
<div class="checkbox">
<label>
<input type="checkbox" id="checkboxWarning" value="option1">
Checkbox with warning
</label>
</div>
</div>
<div class="has-error">
<div class="checkbox">
<label>
<input type="checkbox" id="checkboxError" value="option1">
Checkbox with error
</label>
</div>
</div>
</div>
</body>
</html>
[/html]
Output:
Key Points
- Class form-group wraps the form-control elements.
- Vertical,Horizontal and Inline are three types of layouts in forms.
- Grid classes are used to align labels and groups of form controls in a horizontal layout.