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('你点击了按钮!')"> </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
The above is the detailed content of Usage of html tag . For more information, please follow other related articles on the PHP Chinese website!

HTMLisnotaprogramminglanguage;itisamarkuplanguage.1)HTMLstructuresandformatswebcontentusingtags.2)ItworkswithCSSforstylingandJavaScriptforinteractivity,enhancingwebdevelopment.

HTML is the cornerstone of building web page structure. 1. HTML defines the content structure and semantics, and uses, etc. tags. 2. Provide semantic markers, such as, etc., to improve SEO effect. 3. To realize user interaction through tags, pay attention to form verification. 4. Use advanced elements such as, combined with JavaScript to achieve dynamic effects. 5. Common errors include unclosed labels and unquoted attribute values, and verification tools are required. 6. Optimization strategies include reducing HTTP requests, compressing HTML, using semantic tags, etc.

HTML is a language used to build web pages, defining web page structure and content through tags and attributes. 1) HTML organizes document structure through tags, such as,. 2) The browser parses HTML to build the DOM and renders the web page. 3) New features of HTML5, such as, enhance multimedia functions. 4) Common errors include unclosed labels and unquoted attribute values. 5) Optimization suggestions include using semantic tags and reducing file size.

WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.

The role of HTML is to define the structure and content of a web page through tags and attributes. 1. HTML organizes content through tags such as , making it easy to read and understand. 2. Use semantic tags such as, etc. to enhance accessibility and SEO. 3. Optimizing HTML code can improve web page loading speed and user experience.

HTMLisaspecifictypeofcodefocusedonstructuringwebcontent,while"code"broadlyincludeslanguageslikeJavaScriptandPythonforfunctionality.1)HTMLdefineswebpagestructureusingtags.2)"Code"encompassesawiderrangeoflanguagesforlogicandinteract

HTML, CSS and JavaScript are the three pillars of web development. 1. HTML defines the web page structure and uses tags such as, etc. 2. CSS controls the web page style, using selectors and attributes such as color, font-size, etc. 3. JavaScript realizes dynamic effects and interaction, through event monitoring and DOM operations.

HTML defines the web structure, CSS is responsible for style and layout, and JavaScript gives dynamic interaction. The three perform their duties in web development and jointly build a colorful website.


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

ZendStudio 13.5.1 Mac
Powerful PHP integrated development environment

Dreamweaver CS6
Visual web development tools

SublimeText3 English version
Recommended: Win version, supports code prompts!

SublimeText3 Linux new version
SublimeText3 Linux latest version