This article mainly introduces the use of HTML5 and CSS3 form verification functions. Friends in need can refer to
Client-side verification is the most popular web client program One of the commonly used functions, we have previously used various js libraries to perform form verification. HTML5 actually already provides us with the form validation function. As for why it hasn’t become popular, it’s probably due to compatibility issues and also because the style is too ugly.
Below we will create an HTML5 and CSS3 form validation step by step, using only HTML and CSS.
The completed one is as follows:
Step 1: Organize the validation fields and types
First we need The following fields:
Name(full name)
Phone number(phone number)
Email address(email address)
Website
After the user enters some information, we It is necessary to verify whether the user's information is correct to avoid incorrect data and deceptive data from being transmitted to the server.
In the new specification of HTML5, the input input box provides a variety of input types such as: tel, email, number, range, color, etc. These types are generally reflected in desktop clients. It's not very obvious. It will be more obvious if it is reflected on the mobile keyboard. For example, number will automatically switch to pure numbers on the mobile keyboard, and the email keyboard will automatically switch to the keyboard with @.
Step 2: Determine the form style
We also need to determine the final style of the form. Generally, this work comes from the designer. Here I found a form style on Dribbble as the demo style this time.
Step 3: Template code
Use standard HTML5 declaration code
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>HTML5 Form Validation</title> </head> <body> </body> </html>
Step 4: Create a form
Create a basic form element. Here we do not submit any data, it is just a demonstration, so the form will not be submitted.
<form action="" onsubmit="return false"> </form>
Step 5: Create the form element
The form element consists of the following elements:
-
ul
li
label
input
span
ul and li elements are used for typesetting and layout, and are used to separate form elements and layout. label is used for form field prompt text. input is used for users to enter data. span is used to use emoji to prompt the user whether the fields are filled in correctly.
<ul>
<li>
<label for="name">FULL NAME</label>
<input type="text" id="name" name="
name" placeholder="请输入姓名"/>
<span class="icon-name"></span>
</li>
</ul>The form form html code completion code is as follows:
Step 6: Add style
Complete the form When writing elements, focus on improving its style to make it look more beautiful.
body {
display: flex;
}
form {
padding: 0 10%;
width: 100%;
margin: auto;
}
ul {
list-style-type: none;
padding: 0;
margin: 0;
}
li {
position: relative;
margin-bottom: 20px;
}
label {
color: #333;
display: block;
font-size: 12px;
}
input {
width: 100%;
outline: none;
border: none;
padding: 0.5em 0;
font-size: 14px;
color: black;
position: relative;
border-bottom: 1px solid #d4d4d4;
}
input:-moz-placeholder {
color: #d4d4d4;
}
input::-webkit-input-placeholder {
color: #d4d4d4;
}
li span {
display: block;
position: absolute;
right: 0;
top: 10px;
font-size: 28px;
}
button {
cursor: pointer;
border: 1px solid #999;
border-radius: 4px;
padding: 10px 20px;
margin-top: 10px;
background: #fff;
}css code completion code is as follows:
Step 7: Add EMOJI prompt
in each In the form structure, we have added a span tag. For example, in the name field, we have added a tag. Now add a style to it to display the status of the validation field.
li span {
display: block;
position: absolute;
right: 0;
top: 10px;
font-size: 28px;
}
/*默认的是一个微笑的表情*/
li span::before {
content: '【Related recommendations】
1. Free css online video tutorial
3. php.cn Dugu Jiujian (2)-css video tutorial
The above is the detailed content of Use CSS3+HTML5 to implement form verification function code. For more information, please follow other related articles on the PHP Chinese website!
Simulating Mouse MovementApr 22, 2025 am 11:45 AMIf you've ever had to display an interactive animation during a live talk or a class, then you may know that it's not always easy to interact with your slides
Powering Search With Astro Actions and Fuse.jsApr 22, 2025 am 11:41 AMWith Astro, we can generate most of our site during our build, but have a small bit of server-side code that can handle search functionality using something like Fuse.js. In this demo, we’ll use Fuse to search through a set of personal “bookmarks” th
Undefined: The Third Boolean ValueApr 22, 2025 am 11:38 AMI wanted to implement a notification message in one of my projects, similar to what you’d see in Google Docs while a document is saving. In other words, a
In Defense of the Ternary StatementApr 22, 2025 am 11:25 AMSome months ago I was on Hacker News (as one does) and I ran across a (now deleted) article about not using if statements. If you’re new to this idea (like I
Using the Web Speech API for Multilingual TranslationsApr 22, 2025 am 11:23 AMSince the early days of science fiction, we have fantasized about machines that talk to us. Today it is commonplace. Even so, the technology for making
Jetpack Gutenberg BlocksApr 22, 2025 am 11:20 AMI remember when Gutenberg was released into core, because I was at WordCamp US that day. A number of months have gone by now, so I imagine more and more of us
Creating a Reusable Pagination Component in VueApr 22, 2025 am 11:17 AMThe idea behind most of web applications is to fetch data from the database and present it to the user in the best possible way. When we deal with data there
Using 'box shadows' and clip-path togetherApr 22, 2025 am 11:13 AMLet's do a little step-by-step of a situation where you can't quite do what seems to make sense, but you can still get it done with CSS trickery. In this
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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
SublimeText3 English version
Recommended: Win version, supports code prompts!
mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
SublimeText3 Mac version
God-level code editing software (SublimeText3)
MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.
Atom editor mac version download
The most popular open source editor
