HTML 按鈕標籤

HTML 按鈕標籤允許使用 HTML 文件在網頁上建立活動按鈕控制項。這個元素在 body 標籤內宣告。為什麼我們需要一個按鈕元素？通常，當使用者造訪網頁時，他最常見的行為是點擊網站上的某個位置，從而轉到下一個 URL 頁面。為此，Button 元素無法單獨完成；它是由表單操作創建的，其中 Web 表單有一個預設的提交按鈕可以點擊。

按鈕是使用 元素創建的；它們的功能類似於 具有其他可能性的元素，例如在按鈕標籤之間添加內容和圖像。內容文字出現在按鈕上的開始標記和結束標記之間。您可以使用 JavaScript 對按鈕執行操作或將其包含在表單中。 CSS 可能會處理按鈕特殊樣式的應用，但不同的瀏覽器會引入其獨特的樣式。

文法：

與其他 HTML 標籤一樣，即使按鈕標籤也有開始和結束標籤，且按鈕類型是使用屬性定義的。

<button>
// some stuff like content / image
</button>

HTML 按鈕標籤的屬性

沒有使用特殊屬性，因為它們沒有任何必需的屬性；相反，它們被用作具有type=” 屬性的普通按鈕。“甚至這個元素也是使用CSS 設計的，其屬性可以改變按鈕標籤中的變化。這些屬性是 CSS 字體系列、字體粗細、文字裝飾和字體樣式。背景顏色等著色屬性和文字溢出和文字縮排等佈局屬性。

S.no	Attribute Name	Description	Example
1	autofocus	It is considered a Boolean attribute.	autofocus
2	disabled	Making a button non-clickable.	/button>
3	Form	It Creates a form	…
4	formaction	It specifies the current location for submitting the form data.
5	formnovalidate	It appears in gray and gives non-validation features.
6	Formmethod	It specifies the methods while referring to the next web  page(get the post of HTTP methods)
7	formtarget	It specifies the target path for the server response when a form action is done.
8	formenctype	It has been used when a form is submitted to the webserver for the response; it activates the type of content used.	…..
8	name	It specifies the button name used in the form element, which is used by form inputs.
9	type	It specifies the type of button being used. It has three default values submit, reset, and text.
10	value	It gives an initial value when a button is used along with the form data
11	tabindex	It specifies the tab key and the order does the preference.
12	onclick	When a button is pressed, it runs a small javascript code behind it.

Examples to Implement in HTML Button Tag

Below are examples of implementing an HTML Button Tag:

Example #1

Code:

<title> HTML button tag Example</title>


<h2 id="HTML-button-tag-Example">HTML button tag Example </h2>

Employee Name: Click Reset

Output:

Example #2

Code:

<h3> <center> Example using CSS </center>
<h3>


Normal Class
<button type="button">Add to the First class</button>
<hr>
Economic Class
<button type="button" style="color: pink;"><b> Book Economic Class </b></button>
<hr>
Bussiness class
<button type="button" style="color: orange;"><b> Book Bussiness  Class </b></button>
<hr>
Departure
<button type="button" style="font: bold 12px Open Sans;">Norway </button><br>

</h3>
</h3>

Output:

Example #3

With CSS: Here, we have used padding and margin property. Here are some ways to look at the page better. To create a button with rounded corners, use border-radius.

Code:

<style>
body {
color: #000;
height: 90vh;
background: linear-gradient(-90deg, #a1c3d1 0%, #c48b9e 100%) no-repeat;
text-align: center;
}
input {
width: 280px;
display: block;
margin: 2rem auto;
border: 3px solid #fbc7ff;
padding: 7px;
background: transparent;
border-radius: 25px;
outline: none;
}
::placeholder {
color: #00ced1;
}
.btn {
background:#96f905;
border: none;
height: 3rem;
border-radius: 20px;
width: 220px;
display: block;
color: #96f905;
outline: none;
margin: 2rem auto;
}
</style>

<h1 id="HTML-Form-action-Using-Button">HTML Form action Using Button</h1>

Click

Output:

Note: You can also increase the button size by giving . btn in the above code is the bootstrap function class.

Example #4

The below example shows how to use the attribute autofocus with button element; in an example, when a page Loads, it focuses on the first HTML control.

Code:

<title>
Button Demo
<button>autofocus Attribute
</button>
</title>


<h1 style="color: blue;">
EDUCBA Web Tutorial
</h1>
<h2> Button Tag
<button>autofocus Attribute
</button>
</h2>
<h2> Button Tag
<button>autofocus Attribute
</button>
</h2>
<button id="GFG" autofocus>
Press
</button>
<br>

Output:

Example #5

onclick attribute demo. In the below example, I have used JavaScript to take action in the button; meanwhile, it alerts a dialog box with a text message. We use a JavaScript function to make the critical decision by activating the button with onclick().

Code:

<title>HTML  On Click Button Demo</title>


<h3 id="HTML-On-Click-Button-Demo"> HTML  On Click Button Demo</h3>
<button onclick="alert('Hi Welcome to EDUCBA!')"> Press me... </button>

Output: Before the button press

Alert Message – After the Button click

Example #6

Code:

<script type="text/javascript" src="scripts.js">
</script>
<link rel="stylesheet" href="styles.css">
<script type="text/javascript" src="scripts.js"></script>
<link rel="stylesheet" href="styles.css">


<p>The button loads to the next web page!</p>
<a href="https://www.educba.com" target="_blank">
<button>Submit!</button>
</a>

Output:

Conclusion  

In summary, we have learned about the HTML Button tag. This tag initiates an action and submits content within an HTML document. Important aspects of the website create an easy button, CSS, and JavaScript to look colorful. You can also learn many options related to buttons.

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