使用megapixImage.js定位并展示上传的图片
来源:互联网 发布:mac压缩pdf文件大小 编辑:程序博客网 时间:2024/06/07 04:45
megapix-image插件 使用Canvas压缩图片上传 解决手机端图片上传功能的问题
实现点击input 的上传按钮,选择图片后,直接定位并展示图片。
<!DOCTYPE html><html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"><meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no, minimal-ui" /><meta content="yes"name="apple-mobile-web-app-capable"/><meta content="black"name="apple-mobile-web-app-status-bar-style"/></head><body><input type="file" id="cameraInput" name="cameraInput"/><!--图片预览--><div id="preview"><canvas id="myCanvas"></canvas><img id="imgBtn"/><div><label id="tip2"></label></div></div><script type="text/javascript" src="zepto.min.js"></script><script type="text/javascript" src="mobileFix.mini.js?v=20150704"></script><!-- 或者引用megapixImage.js 可网上下载到--><script>var fileInput = document.getElementById('cameraInput'); fileInput.onchange = function () { var file = fileInput.files[0]; var mpImg = new MegaPixImage(file); //var resCanvas1 = document.getElementById('myCanvas');var resCanvas1 = document.getElementById('imgBtn'); mpImg.render(resCanvas1, {maxWidth: 550, maxHeight: 550, quality: 0.8 }); };</script></body></html>
效果图: