search
Homephp教程php手册利用ctrl+v实现粘贴截图完成上传功能

利用ctrl+v实现粘贴截图完成上传功能

Jun 06, 2016 pm 07:38 PM
uploaduseFunctionFinishaccomplishscreenshotPaste

今天发现segmentfault的评论留言里面可以粘贴上传图片,于是研究了下怎么实现的! 原理很简单其实就是监控粘贴事件,然后检测是否粘贴的东西里面有图片,有的话直接触发ajax上传 更多技术文章请访问:http://www.dahuzhi.com 代码可以直接运行,有兴趣你们可以试试

今天发现segmentfault的评论留言里面可以粘贴上传图片,于是研究了下怎么实现的!
原理很简单其实就是监控粘贴事件,然后检测是否粘贴的东西里面有图片,有的话直接触发ajax上传

更多技术文章请访问: http://www.dahuzhi.com

代码可以直接运行,有兴趣你们可以试试 PHP JavaScript Localisation
<?php
header("Access-Control-Allow-Origin:*");
$url  = 'http://'.$_SERVER['HTTP_HOST'];
$file = (isset($_POST["file"])) ? $_POST["file"] : '';
if($file)
{
	$data = base64_decode(str_replace('data:image/png;base64,', '', $file));  //截图得到的只能是png格式图片,所以只要处理png就行了
	$name = md5(time()) . '.png';  // 这里把文件名做了md5处理
	file_put_contents($name, $data);
	echo "$url/$name";
	die;
}
?>


<div id="box" style="width:400px;height:400px;border:1px solid;" contenteditable>
</div>
<input type="hidden" name="img" value="" id="img_puth"/>

<script>
	//查找box元素,检测当粘贴时候,
	document.querySelector('#box').addEventListener('paste', function(e) {

		//判断是否是粘贴图片
	    if (e.clipboardData && e.clipboardData.items[0].type.indexOf('image') > -1) 
	    {
			var that 	 = this,
				reader   = new FileReader();
				file     = e.clipboardData.items[0].getAsFile();

			//ajax上传图片
	        reader.onload = function(e) 
	        {
	            var xhr = new XMLHttpRequest(),
	                fd  = new FormData();

	            xhr.open('POST', '', true);
	            xhr.onload = function () 
	            {
	                var img = new Image();
	                img.src = xhr.responseText;

	       			// that.innerHTML = '<img src="/static/imghwm/default1.png"  data-src="'+img.src+'"  class="lazy"+img.src+'" alt=""/>';
	                document.getElementById("img_puth").value = img.src;
	            }

	            // this.result得到图片的base64 (可以用作即时显示)
	            fd.append('file', this.result); 
	            that.innerHTML = '<img src="/static/imghwm/default1.png"  data-src="'+this.result+'"  class="lazy"+this.result+'" alt=""/>';
	            xhr.send(fd);
	        }
	        reader.readAsDataURL(file);
	    }
	}, false);
</script>
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

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)
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
1 months agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Chat Commands and How to Use Them
1 months agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

ZendStudio 13.5.1 Mac

ZendStudio 13.5.1 Mac

Powerful PHP integrated development environment

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

EditPlus Chinese cracked version

EditPlus Chinese cracked version

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

Safe Exam Browser

Safe Exam Browser

Safe Exam Browser is a secure browser environment for taking online exams securely. This software turns any computer into a secure workstation. It controls access to any utility and prevents students from using unauthorized resources.

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools