Tạo button gủi gmail html w3school


Example

A clickable button is marked up as follows:

Click Me!

Try it Yourself »

More "Try it Yourself" examples below.

Definition and Usage

The tag defines a clickable button.

Inside a element you can put text [and tags like , , ,
, , etc.]. That is not possible with a button created with the element!

Tip: Always specify the type attribute for a element, to tell browsers what type of button it is.

Tip: You can easily style buttons with CSS! Look at the examples below or visit our CSS Buttons tutorial.

Browser Support

Element
Yes Yes Yes Yes Yes

Attributes

AttributeValueDescription
autofocus autofocus Specifies that a button should automatically get focus when the page loads
disabled disabled Specifies that a button should be disabled
form form_id Specifies which form the button belongs to
formaction URL Specifies where to send the form-data when a form is submitted. Only for type="submit"
formenctype application/x-www-form-urlencoded
multipart/form-data
text/plain
Specifies how form-data should be encoded before sending it to a server. Only for type="submit"
formmethod get
post
Specifies how to send the form-data [which HTTP method to use]. Only for type="submit"
formnovalidate formnovalidate Specifies that the form-data should not be validated on submission. Only for type="submit"
formtarget _blank
_self
_parent
_top
framename
Specifies where to display the response after submitting the form. Only for type="submit"
name name Specifies a name for the button
type button
reset
submit
Specifies the type of button
value text Specifies an initial value for the button

Global Attributes

The tag also supports the Global Attributes in HTML.

Event Attributes

The tag also supports the Event Attributes in HTML.

More Examples

Example

Use CSS to style buttons:





.button {
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}

.button1 {background-color: #4CAF50;} /* Green */
.button2 {background-color: #008CBA;} /* Blue */


Green
Blue


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Example

Use CSS to style buttons [with hover effect]:





.button {
  border: none;
  color: white;
  padding: 16px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  transition-duration: 0.4s;
  cursor: pointer;
}

.button1 {
  background-color: white;
  color: black;
  border: 2px solid #4CAF50;
}

.button1:hover {
  background-color: #4CAF50;
  color: white;
}

.button2 {
  background-color: white;
  color: black;
  border: 2px solid #008CBA;
}

.button2:hover {
  background-color: #008CBA;
  color: white;
}



Green
Blue


Try it Yourself »

Related Pages

HTML DOM reference: Button Object

CSS Tutorial: Styling Buttons

Default CSS Settings

None.



An HTML form is used to collect user input. The user input is most often sent to a server for processing.

The Element

The HTML element is used to create an HTML form for user input:


.
form elements
.

The element is a container for different types of input elements, such as: text fields, checkboxes, radio buttons, submit buttons, etc.

All the different form elements are covered in this chapter: HTML Form Elements.

The Element

The HTML element is the most used form element.

An element can be displayed in many ways, depending on the type attribute.

Here are some examples:

TypeDescription
Displays a single-line text input field
Displays a radio button [for selecting one of many choices]
Displays a checkbox [for selecting zero or more of many choices]
Displays a submit button [for submitting the form]
Displays a clickable button

All the different input types are covered in this chapter: HTML Input Types.

Text Fields

The defines a single-line input field for text input.

Example

A form with input fields for text:


  First name:

 

  Last name:

 

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This is how the HTML code above will be displayed in a browser:

Note: The form itself is not visible. Also note that the default width of an input field is 20 characters.

The Element

Notice the use of the element in the example above.

The tag defines a label for many form elements.

The element is useful for screen-reader users, because the screen-reader will read out loud the label when the user focus on the input element.

The element also help users who have difficulty clicking on very small regions [such as radio buttons or checkboxes] - because when the user clicks the text within the element, it toggles the radio button/checkbox.

The for attribute of the tag should be equal to the id attribute of the element to bind them together.

Radio Buttons

The defines a radio button.

Radio buttons let a user select ONE of a limited number of choices.

Example

A form with radio buttons:

Choose your favorite Web language:


 
  HTML

 
  CSS

 
  JavaScript

Try it Yourself »

This is how the HTML code above will be displayed in a browser:

Choose your favorite Web language:

HTML
CSS
JavaScript

Checkboxes

The defines a checkbox.

Checkboxes let a user select ZERO or MORE options of a limited number of choices.

Example

A form with checkboxes:


 
  I have a bike

 
  I have a car

 
  I have a boat

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This is how the HTML code above will be displayed in a browser:

I have a bike
I have a car
I have a boat

The Submit Button

The defines a button for submitting the form data to a form-handler.

The form-handler is typically a file on the server with a script for processing input data.

The form-handler is specified in the form's action attribute.

Example

A form with a submit button:


  First name:

 

  Last name:

 


 

Try it Yourself »

This is how the HTML code above will be displayed in a browser:

The Name Attribute for

Notice that each input field must have a name attribute to be submitted.

If the name attribute is omitted, the value of the input field will not be sent at all.

Example

This example will not submit the value of the "First name" input field: 


  First name:

 


 

Try it Yourself »

HTML Exercises

Test Yourself With Exercises

Exercise:

In the form below, add an input field with the type "button" and the value "OK".



Start the Exercise



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