Use HTML to implement multiple image upload preview functions
I recently wrote a web page with multiple picturesUpload The script of feels quite practical, so I won’t go into the details and just paste the code~
<head>
<style>
.pro_img{ margin-left:10px;margin-top:10px;width:300px;height: 300px;background-color: black; --border-radius:999em; overflow:hidden;float:left; --margin:5% 35%;position: relative;}
.pro_img img{ position: absolute;left: 50%;top:50%; transform: translate(-50%,-50%);width: 100%
}
.pro_img {position:relative}
.pro_img input{position: absolute;width: 100%;height: 100%;margin:0;opacity:0;z-index: 100;}
</style>
<script type="text/javascript" src="jquery.min.js"></script>
<script>
name_pic=1;
function t1(o){
//alert(name_pic);
if(o==1 || name_pic!=1){
var file="file"+o;
var img="img"+o;
var hid="hidden"+o;
var aa="a"+o;
}else{
var file="file"+name_pic;
var img="img"+name_pic;
var hid="hidden"+name_pic;
var aa="a"+name_pic;
}
var docObj = document.getElementById(file);
var imgObjPreview = document.getElementById(img);
var hidden=document.getElementById(hid);
// alert(hidden);
if (docObj.files && docObj.files[0]) {
hidden.src=window.URL.createObjectURL(docObj.files[0]); //获取file文件的路径
hidden.onload=function(){
var width=hidden.width;
var height=hidden.height;
var a=document.getElementById(aa);
if(width>height){
imgObjPreview.style.cssText='width:100%'; //重写css样式
}else{
imgObjPreview.style.cssText='height:100%;width:auto;';
}
imgObjPreview.src = window.URL.createObjectURL(docObj.files[0]);
imgObjPreview.style.display = 'block';
}
}else{
return false;
}
if(o==name_pic){
var count=$('.pro_img').length;
if(count<6){
name_pic++;
var pic_p="<a class='pro_img' id='a"+name_pic+"' ><input type='file' id='file"+name_pic+"' accept='image/*' multiple='multiple' name='pic[]' onchange='t1("+name_pic+")'/><img src='upload.jpg' id='img"+name_pic+"'></a><img id='hidden"+name_pic+"' style='display:none;'>";
$('#upload').append(pic_p);
}
}
}
</script>
</head>
<!-- multiple='multiple' -->
<form action="http://192.168.0.7/index.php/Home/Pic/upload" enctype="multipart/form-data" method="post">
<p id='upload'>
<a class='pro_img' id='a1' >
<input type='file' id='file1' accept='image/*' multiple='multiple' name='pic[]' onchange='t1(1)'/>
<img src='upload.jpg' id='img1'></a>
<img id='hidden1' style='display:none;'>
</p>
<input type='submit' value="上传" />
</form>Replace some upload.png of this picture by yourself You can meet your needs. If there is no response when clicking on the picture, don’t forget to add jquery
The above is the detailed content of Use HTML to implement multiple image upload preview functions. For more information, please follow other related articles on the PHP Chinese 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
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
1386
52
What is the purpose of the <progress> element?
Mar 21, 2025 pm 12:34 PM
The article discusses the HTML <progress> element, its purpose, styling, and differences from the <meter> element. The main focus is on using <progress> for task completion and <meter> for stati
Is HTML easy to learn for beginners?
Apr 07, 2025 am 12:11 AM
HTML is suitable for beginners because it is simple and easy to learn and can quickly see results. 1) The learning curve of HTML is smooth and easy to get started. 2) Just master the basic tags to start creating web pages. 3) High flexibility and can be used in combination with CSS and JavaScript. 4) Rich learning resources and modern tools support the learning process.
What is the purpose of the <datalist> element?
Mar 21, 2025 pm 12:33 PM
The article discusses the HTML <datalist> element, which enhances forms by providing autocomplete suggestions, improving user experience and reducing errors.Character count: 159
What is the purpose of the <meter> element?
Mar 21, 2025 pm 12:35 PM
The article discusses the HTML <meter> element, used for displaying scalar or fractional values within a range, and its common applications in web development. It differentiates <meter> from <progress> and ex
What is the viewport meta tag? Why is it important for responsive design?
Mar 20, 2025 pm 05:56 PM
The article discusses the viewport meta tag, essential for responsive web design on mobile devices. It explains how proper use ensures optimal content scaling and user interaction, while misuse can lead to design and accessibility issues.
What is the purpose of the <iframe> tag? What are the security considerations when using it?
Mar 20, 2025 pm 06:05 PM
The article discusses the <iframe> tag's purpose in embedding external content into webpages, its common uses, security risks, and alternatives like object tags and APIs.
The Roles of HTML, CSS, and JavaScript: Core Responsibilities
Apr 08, 2025 pm 07:05 PM
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.
Understanding HTML, CSS, and JavaScript: A Beginner's Guide
Apr 12, 2025 am 12:02 AM
WebdevelopmentreliesonHTML,CSS,andJavaScript:1)HTMLstructurescontent,2)CSSstylesit,and3)JavaScriptaddsinteractivity,formingthebasisofmodernwebexperiences.
