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I'd like to create a progress bar for uploading files using jquery and ajax. so i wrote following jquery code.

function updateProgress(evt) { // evt is an ProgressEvent. if (evt.lengthComputable) { var percentLoaded = Math.round((evt.loaded / evt.total) * 100); // Increase the progress bar length. $(".progress > div").css( { width: percentLoaded + '%' }); } } $.ajax( { url: 'assets/php/upload.php?action=uploadFiles', type: 'POST', data: newFormData, cache: false, xhr: function () { myXhr = $.ajaxSettings.xhr(); if (myXhr.upload) { myXhr.upload.addEventListener('progress', updateProgress, false); } return myXhr; }, contentType: false, processData: false, });

But the problem is the progress bar will be 100% in a second while uploading file has not finished yet. what is wrong with my code?

Thank you,

Alireza

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Maybe it's something related with your style... don't know since I can't see all your code. Try with the following. It's working, but imperceptible with small files. You can use a breakpoint or upload a really huge file to be able to see it. source: http://www.html5rocks.com/en/tutorials/file/dndfiles/

<style> #progress_bar { margin: 10px 0; padding: 3px; border: 1px solid #000; font-size: 14px; clear: both; opacity: 1.0; -moz-transition: opacity 1s linear; -o-transition: opacity 1s linear; -webkit-transition: opacity 1s linear; } #progress_bar.loading { opacity: 1.0; } #progress_bar .percent { background-color: #99ccff; height: auto; width: 0; } </style> <input type="file" id="files" name="file" /> <button onclick="abortRead();">Cancel read</button> <div id="progress_bar"><div class="percent">0%</div></div> <script> var reader; var progress = document.querySelector('.percent'); function abortRead() { reader.abort(); } function errorHandler(evt) { switch(evt.target.error.code) { case evt.target.error.NOT_FOUND_ERR: alert('File Not Found!'); break; case evt.target.error.NOT_READABLE_ERR: alert('File is not readable'); break; case evt.target.error.ABORT_ERR: break; // noop default: alert('An error occurred reading this file.'); }; } function updateProgress(evt) { // evt is an ProgressEvent. if (evt.lengthComputable) { var percentLoaded = Math.round((evt.loaded / evt.total) * 100); // Increase the progress bar length. if (percentLoaded < 100) { progress.style.width = percentLoaded + '%'; progress.textContent = percentLoaded + '%'; } } } function handleFileSelect(evt) { // Reset progress indicator on new file selection. progress.style.width = '0%'; progress.textContent = '0%'; reader = new FileReader(); reader.onerror = errorHandler; reader.onprogress = updateProgress; reader.onabort = function(e) { alert('File read cancelled'); }; reader.onloadstart = function(e) { document.getElementById('progress_bar').className = 'loading'; }; reader.onload = function(e) { // Ensure that the progress bar displays 100% at the end. progress.style.width = '100%'; progress.textContent = '100%'; setTimeout("document.getElementById('progress_bar').className='';", 2000); } // Read in the image file as a binary string. reader.readAsBinaryString(evt.target.files[0]); } document.getElementById('files').addEventListener('change', handleFileSelect, false); </script>
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