Created
September 20, 2011 10:44
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Javascript File upload preview
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| <!DOCTYPE HTML> | |
| <html> | |
| <head> | |
| <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> | |
| <title>File Upload Preview Test</title> | |
| <script type="text/javascript"> | |
| if (window.FileReader) { | |
| var reader = new FileReader(), rFilter = /^(image\/bmp|image\/cis-cod|image\/gif|image\/ief|image\/jpeg|image\/jpeg|image\/jpeg|image\/pipeg|image\/png|image\/svg\+xml|image\/tiff|image\/x-cmu-raster|image\/x-cmx|image\/x-icon|image\/x-portable-anymap|image\/x-portable-bitmap|image\/x-portable-graymap|image\/x-portable-pixmap|image\/x-rgb|image\/x-xbitmap|image\/x-xpixmap|image\/x-xwindowdump)$/i; | |
| reader.onload = function (oFREvent) { | |
| preview = document.getElementById("uploadPreview") | |
| preview.src = oFREvent.target.result; | |
| preview.style.display = "block"; | |
| }; | |
| function doTest() { | |
| if (document.getElementById("myfile").files.length === 0) { return; } | |
| var file = document.getElementById("myfile").files[0]; | |
| if (!rFilter.test(file.type)) { alert("You must select a valid image file!"); return; } | |
| reader.readAsDataURL(file); | |
| } | |
| } else { | |
| alert("FileReader object not found :( \nTry using Chrome, Firefox or WebKit"); | |
| } | |
| </script> | |
| </head> | |
| <body> | |
| <p><input type="file" id="myfile" name="myfile" size="30" onchange="doTest()"></p> | |
| <img id="uploadPreview" src="" width="100" style="display:none" /> | |
| </body> | |
| </html> |
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