Detailed introduction to HTML forms-HTML Tutorial-php.cn

Home

Web Front-end

HTML Tutorial

Detailed introduction to HTML forms

Y2J

May 20, 2017 am 10:20 AM

HTML forms are used to collect different types of user input. HTML5 Input, with multiple new form input types, provides better input control and validation.

Form

Edit

A form is an area that contains form elements.

Form elements are elements that allow users to enter information in a form (such as text fields, drop-down lists, radio buttons, check boxes, etc.).

Forms are defined using the form tag (

##Input type

Edit

HTML5 has several new form input types. These new features provide better input control and validation.

1.Input type - email

email type is used for input fields that should contain e-mail addresses. When submitting the form, the value of the

email field will automatically be verified.

2.Input type - url

The url type is used for input fields that should contain URL addresses. When submitting the form, the value of the url field is automatically verified.

3.Input type - number

number type is used for input fields that should contain numerical values. You can also set limits on the numbers that are accepted:

4.Input type - range

range type is used when a certain Input field for numeric values within the range.

Range types are displayed as sliders.

You can also set limits on the numbers accepted:

5.Input Type - Date Pickers (Data Checker)

HTML5 has several new input types for selecting dates and times:

date - selects day, month, year

month - selects month, year

week - Select week and year

time - Select time (hours and minutes)

datetime - Select time, day, month, year (UTC time)

datetime-local - Select time, day, month, year (local time)

6.Input type - search

search type is used

Search domains, such as site search or Google search.

The search field appears as a regular text field.

Input

Edit

The form tag used in most cases is the input tag (). The input type is defined by the type

attribute (type). Most commonly used input types are as follows:

Text field

Text is used when users type letters, numbers, etc. in a form fields (text fields).

<form>
First name: <input type="text" name="firstname" /><br />
Last name: <input type="text" name="lastname" />
</form>

The browser displays as follows:

Detailed introduction to HTML forms

#Note that the form itself is not visible. Also, in most browsers, the default width of a text field is 20 characters.

Radio buttons are used when the user selects one of several given choices.

<form>
<input type="radio" name="sex" value="male"> Male
<input type="radio" name="sex" value="female"> Female
</form>

The browser displays the following:

Male
Female

Note that you can only select one of them.

As shown:

Detailed introduction to HTML forms

Check box

When the user needs to select from a number of given choices When selecting one or several options, checkboxes are used.

<form>
<input type="checkbox" name="bike" />I have a bike
<br />
<input type="checkbox" name="car" />I have a car
</form>

The browser displays as follows:

I have a bike
I have a car

Other components

Edit

Confirm

Button

When the user clicks the confirm button (submit), the content of the form will be transferred to another file. [1]

Action attribute

The action attribute (

action) of the form defines the file name of the destination file. The file defined by the action attribute usually performs related processing on the input data received.

<form name="input" action="html_form_action.asp" method="get">
Username: <input type="text" name="user">
<input type="submit" value="Submit">
</form>

The browser displays as follows:

Username:

As shown below:

Detailed introduction to HTML forms

If you are in the above text Type a few letters into the box and click the confirm button, then the input data will be sent to the page named "html_form_action.asp". That page will display the results entered.

Form Tag

Detailed introduction to HTML forms

【Related Recommendations】

1. HTML Free Video Tutorial

2. Detailed explanation of the working process of the form form

3. Detailed explanation of the method attribute in the form tag

4. Take you to master the table and form forms in HTML

5. Detailed explanation of the parameters and attributes of the form form in HTML

The above is the detailed content of Detailed introduction to HTML forms. For more information, please follow other related articles on the PHP Chinese website!

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 vs. CSS and JavaScript: Comparing Web TechnologiesApr 23, 2025 am 12:05 AM

HTML, CSS and JavaScript are the core technologies for building modern web pages: 1. HTML defines the web page structure, 2. CSS is responsible for the appearance of the web page, 3. JavaScript provides web page dynamics and interactivity, and they work together to create a website with a good user experience.

HTML as a Markup Language: Its Function and PurposeApr 22, 2025 am 12:02 AM

The function of HTML is to define the structure and content of a web page, and its purpose is to provide a standardized way to display information. 1) HTML organizes various parts of the web page through tags and attributes, such as titles and paragraphs. 2) It supports the separation of content and performance and improves maintenance efficiency. 3) HTML is extensible, allowing custom tags to enhance SEO.

The Future of HTML, CSS, and JavaScript: Web Development TrendsApr 19, 2025 am 12:02 AM

The future trends of HTML are semantics and web components, the future trends of CSS are CSS-in-JS and CSSHoudini, and the future trends of JavaScript are WebAssembly and Serverless. 1. HTML semantics improve accessibility and SEO effects, and Web components improve development efficiency, but attention should be paid to browser compatibility. 2. CSS-in-JS enhances style management flexibility but may increase file size. CSSHoudini allows direct operation of CSS rendering. 3.WebAssembly optimizes browser application performance but has a steep learning curve, and Serverless simplifies development but requires optimization of cold start problems.

HTML: The Structure, CSS: The Style, JavaScript: The BehaviorApr 18, 2025 am 12:09 AM

The roles of HTML, CSS and JavaScript in web development are: 1. HTML defines the web page structure, 2. CSS controls the web page style, and 3. JavaScript adds dynamic behavior. Together, they build the framework, aesthetics and interactivity of modern websites.

The Future of HTML: Evolution and Trends in Web DesignApr 17, 2025 am 12:12 AM

The future of HTML is full of infinite possibilities. 1) New features and standards will include more semantic tags and the popularity of WebComponents. 2) The web design trend will continue to develop towards responsive and accessible design. 3) Performance optimization will improve the user experience through responsive image loading and lazy loading technologies.

HTML vs. CSS vs. JavaScript: A Comparative OverviewApr 16, 2025 am 12:04 AM

The roles of HTML, CSS and JavaScript in web development are: HTML is responsible for content structure, CSS is responsible for style, and JavaScript is responsible for dynamic behavior. 1. HTML defines the web page structure and content through tags to ensure semantics. 2. CSS controls the web page style through selectors and attributes to make it beautiful and easy to read. 3. JavaScript controls web page behavior through scripts to achieve dynamic and interactive functions.

HTML: Is It a Programming Language or Something Else?Apr 15, 2025 am 12:13 AM

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

HTML: Building the Structure of Web PagesApr 14, 2025 am 12:14 AM

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.

See all articles