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<!DOCTYPE html> <html> <head> <title>Image preview on realtime</title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script> </head> <body> <h3>即時預覽Image</h3> <form name="form0" id="form0" > <input type="file" name="file0" id="file0" multiple="multiple" /><br> <img src="" id="img0" > </form> <script> /** * 使用HTML5 File API, 來即時預覽image */ $("#file0").change(function(){ var objUrl = getObjectURL(this.files[0]) ; console.log("objUrl = "+objUrl) ; if (objUrl) { $("#img0").attr("src", objUrl) ; } }) ; /** * 建立一個可存取到該file的url * PS: 瀏覽器必須支援HTML5 File API */ function getObjectURL(file) { var url = null ; if (window.createObjectURL!=undefined) { // basic url = window.createObjectURL(file) ; } else if (window.URL!=undefined) { // mozilla(firefox) url = window.URL.createObjectURL(file) ; } else if (window.webkitURL!=undefined) { // webkit or chrome url = window.webkitURL.createObjectURL(file) ; } return url ; } </script> </body> </html>