Description:"/> Description:">
search
Usage of html tag

In web pages, buttons are divided into three types: ordinary button button, submit button, and reset button.

1. Ordinary button button

Ordinary buttons generally need to be cooperated with JavaScript scripts to implement the form.

Syntax:

<input type="button" value="普通按钮的取值" onclick="JavaScript脚本程序"/>

Description:

The value of value is the text displayed on the button, onclick is the event of the ordinary button, we will cover this in the JavaScript introductory tutorial Detailed explanation, it’s OK for everyone to understand it here.

Example:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<body>
    单击按钮弹出对话框:<br/>
    <input type="button" value="按钮" onclick="alert(&#39;你点击了按钮!&#39;)">
</body>
</html>

2. Submit button submit

The submit button can be regarded as an ordinary button with special functions. Clicking the submit button can submit the form content to Server processing.

Syntax:

<input type="submit" value="提交按钮的取值"/>

Description: The value of

value is the text displayed on the button. See the example in Reset Button for an example.

The real usefulness of the submit button cannot be truly understood until we learn back-end technology.

3. Reset button reset

The reset button can also be regarded as an ordinary button with special functions. Clicking the reset button can clear the information entered by the user in the page form.

Syntax:

<input type="reset" value="重置按钮的取值"/>

Description: The value of

value is the text displayed on the button.

Example:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<body>
    <form name="form1" method="post" action="index.html">
        账号:<input type="text"/><br/>
        密码:<input type="text"/><br/>
        <input type="submit" value="提交"/>
        <input type="reset" value="重置"/>
    </form>
</body>
</html>

After you enter characters in the text box and press the reset button, you will find that the content of the text box is cleared! This is what the reset button does.

1. Misunderstanding of the reset button

We know from the above that the reset button can clear the information entered by the user in the form, but the reset button can only clear the "current form tag" The content of the form element is invalid for form elements outside the current form tag.

Example:

<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <title></title>
</head>
<body>
    <form name="form1" method="post" action="index.html">
        账号:<input type="text"/><br/>
        密码:<input type="text"/><br/>
        <input type="submit" value="提交"/>
        <input type="reset" value="重置"/>
    </form>
    昵称:<input type="text"/><br/>
</body>
</html>

Then if you enter information in the text box outside the

tag, that is, the nickname text box and then press the reset button, you will find that it is invalid.

Conclusion: The reset button can only clear the input information of the form element inside the current

tag, and has no effect on the form elements outside the current
tag.

I would like to mention here that the submit button is also for the current

tag.

4. The difference between ordinary buttons, submit buttons and reset buttons

We know from the above: ordinary buttons are generally combined with JavaScript scripts to achieve some special effects, and submit buttons are mainly used to The form input information currently inside the

tag is submitted to the server for processing, and the reset button clears the input information of the form element currently inside the
tag.

It is impossible for you to fully understand the functions of these three buttons at the introductory stage of HTML. So don’t panic, it doesn’t matter if you don’t understand it well, because it involves JavaScript and dynamic web pages, and we will understand it clearly after taking the later courses. In the HTML stage, we only need to know what kinds of buttons there are and how to write the label code. It's very simple.

The above is the detailed content of Usage of html tag

Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
HTML超文本标记语言--超在那里?(文档分析)HTML超文本标记语言--超在那里?(文档分析)Aug 02, 2022 pm 06:04 PM

本篇文章带大家了解一下HTML(超文本标记语言),介绍一下HTML的本质,HTML文档的结构、HTML文档的基本标签和图像标签、列表、表格标签、媒体元素、表单,希望对大家有所帮助!

html怎么设置button大小及颜色html怎么设置button大小及颜色Mar 05, 2021 pm 05:16 PM

在html中,可以使用width和height属性来设置button元素的大小,使用background-color属性来设置button元素的颜色,具体语法为“button{width:宽度值;height:高度值;background-color: 颜色值;}”。

web前端笔试题库之HTML篇web前端笔试题库之HTML篇Apr 21, 2022 am 11:56 AM

总结了一些web前端面试(笔试)题分享给大家,本篇文章就先给大家分享HTML部分的笔试题(附答案),大家可以自己做做,看看能答对几个!

HTML5中画布标签是什么HTML5中画布标签是什么May 18, 2022 pm 04:55 PM

HTML5中画布标签是“<canvas>”。canvas标签用于图形的绘制,它只是一个矩形的图形容器,绘制图形必须通过脚本(通常是JavaScript)来完成;开发者可利用多种js方法来在canvas中绘制路径、盒、圆、字符以及添加图像等。

总结HTML中a标签的使用方法及跳转方式总结HTML中a标签的使用方法及跳转方式Aug 05, 2022 am 09:18 AM

本文给大家总结介绍a标签使用方法和跳转方式,希望对大家有所帮助!

html5废弃了哪个列表标签html5废弃了哪个列表标签Jun 01, 2022 pm 06:32 PM

html5废弃了dir列表标签。dir标签被用来定义目录列表,一般和li标签配合使用,在dir标签对中通过li标签来设置列表项,语法“<dir><li>列表项值</li>...</dir>”。HTML5已经不支持dir,可使用ul标签取代。

html中document是什么html中document是什么Jun 17, 2022 pm 04:18 PM

在html中,document是文档对象的意思,代表浏览器窗口的文档;document对象是window对象的子对象,所以可通过“window.document”属性对其进行访问,每个载入浏览器的HTML文档都会成为Document对象。

html5支持boolean值属性吗html5支持boolean值属性吗Apr 22, 2022 pm 04:56 PM

html5支持boolean值属性;boolean值属性指是属性值为true或者false的属性,如input元素中的disabled属性,不使用该属性表示值为flase,不禁用元素,使用该属性可以不设置属性值表示值为true,禁用元素。

See all articles

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

SAP NetWeaver Server Adapter for Eclipse

SAP NetWeaver Server Adapter for Eclipse

Integrate Eclipse with SAP NetWeaver application server.

EditPlus Chinese cracked version

EditPlus Chinese cracked version

Small size, syntax highlighting, does not support code prompt function

Dreamweaver Mac version

Dreamweaver Mac version

Visual web development tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

VSCode Windows 64-bit Download

VSCode Windows 64-bit Download

A free and powerful IDE editor launched by Microsoft