File upload progress bar with jQuery

I am trying to implement an AJAX file upload feature in my project. I am using jQuery for this; my code submits the data using AJAX. I also want to implement a file upload progress bar. How can I do this? Is there any way to calculate how much has already been uploaded so that I can calculate the percentage uploaded and create a progress bar?

Answers


Note: This question is related to the jQuery form plugin. If you are searching for a pure jQuery solution, start here. There is no overall jQuery solution for all browser. So you have to use a plugin. I am using dropzone.js, which have an easy fallback for older browsers. Which plugin you prefer depends on your needs. There are a lot of good comparing post out there.

From the examples:

jQuery:

$(function() {

    var bar = $('.bar');
    var percent = $('.percent');
    var status = $('#status');

    $('form').ajaxForm({
        beforeSend: function() {
            status.empty();
            var percentVal = '0%';
            bar.width(percentVal);
            percent.html(percentVal);
        },
        uploadProgress: function(event, position, total, percentComplete) {
            var percentVal = percentComplete + '%';
            bar.width(percentVal);
            percent.html(percentVal);
        },
        complete: function(xhr) {
            status.html(xhr.responseText);
        }
    });
}); 

html:

<form action="file-echo2.php" method="post" enctype="multipart/form-data">
    <input type="file" name="myfile"><br>
    <input type="submit" value="Upload File to Server">
</form>

<div class="progress">
    <div class="bar"></div >
    <div class="percent">0%</div >
</div>

<div id="status"></div>

you have to style the progressbar with css...


I've done this with jQuery only:

$.ajax({
  xhr: function() {
    var xhr = new window.XMLHttpRequest();

    xhr.upload.addEventListener("progress", function(evt) {
      if (evt.lengthComputable) {
        var percentComplete = evt.loaded / evt.total;
        percentComplete = parseInt(percentComplete * 100);
        console.log(percentComplete);

        if (percentComplete === 100) {

        }

      }
    }, false);

    return xhr;
  },
  url: posturlfile,
  type: "POST",
  data: JSON.stringify(fileuploaddata),
  contentType: "application/json",
  dataType: "json",
  success: function(result) {
    console.log(result);
  }
});

I have used the following in my project. you can try too.

ajax = new XMLHttpRequest();
ajax.onreadystatechange = function () {

    if (ajax.status) {

        if (ajax.status == 200 && (ajax.readyState == 4)){
            //To do tasks if any, when upload is completed
        }
    }
}
ajax.upload.addEventListener("progress", function (event) {

    var percent = (event.loaded / event.total) * 100;
    //**percent** variable can be used for modifying the length of your progress bar.
    console.log(percent);

});

ajax.open("POST", 'your file upload link', true);
ajax.send(formData);
//ajax.send is for uploading form data.

check this out: http://hayageek.com/docs/jquery-upload-file.php I've found it accidentally on the net.


If you are using jquery on your project, and do not want to implement the upload mechanism from scratch, you can use https://github.com/blueimp/jQuery-File-Upload.

They have a very nice api with multiple file selection, drag&drop support, progress bar, validation and preview images, cross-domain support, chunked and resumable file uploads. And they have sample scripts for multiple server languages(node, php, python and go).

Demo url: https://blueimp.github.io/jQuery-File-Upload/.


here is a more complete looking jquery 1.11.x $.ajax() usage:

<script type="text/javascript">
  function uploadProgressHandler(event)
  {
    $("#loaded_n_total").html("Uploaded "+event.loaded+" bytes of "+event.total);
    var percent = (event.loaded / event.total) * 100;
    var progress = Math.round(percent);
    $("#uploadProgressBar").html(progress + " percent na ang progress");
    $("#uploadProgressBar").css("width", progress + "%");
    $("#status").html(progress +"% uploaded... please wait");
  }

  function loadHandler(event)
  {
    $("#status").html(event.target.responseText);
    $("#uploadProgressBar").css("width", "0%");
  }

  function errorHandler(event){
    $("#status").html("Upload Failed");
  }

  function abortHandler(event){
    $("#status").html("Upload Aborted");
  }

  $("#uploadFile").click(function(event)
                         {
                           event.preventDefault();
                           var file = $("#fileUpload")[0].files[0];
                           var formData = new FormData();
                           formData.append("file1", file);

                           $.ajax({url: 'http://testarea.local/UploadWithProgressBar1/file_upload_parser.php',
                                   method: 'POST',
                                   type: 'POST',
                                   data: formData,
                                   contentType: false,
                                   processData: false,
                                   xhr: function()
                                        {
                                          var xhr = new window.XMLHttpRequest();
                                          xhr.upload.addEventListener("progress",
                                                                      uploadProgressHandler,
                                                                      false
                                                                     );
                                          xhr.addEventListener("load", loadHandler, false);
                                          xhr.addEventListener("error", errorHandler, false);
                                          xhr.addEventListener("abort", abortHandler, false);

                                          return xhr;
                                        }
                                  }
                                 );
                         }
                        );
</script>

This solved my problem

$.ajax({
  xhr: function() {
    var xhr = new window.XMLHttpRequest();

    xhr.upload.addEventListener("progress", function(evt) {
      if (evt.lengthComputable) {
        var percentComplete = evt.loaded / evt.total;
        percentComplete = parseInt(percentComplete * 100);
var $link = $('.'+ids);
          var $img = $link.find('i'); 
          $link.html('Uploading..('+percentComplete+'%)');
          $link.append($img);
      }
    }, false);

    return xhr;
  },
  url: posturlfile,
  type: "POST",
  data: JSON.stringify(fileuploaddata),
  contentType: "application/json",
  dataType: "json",
  success: function(result) {
    console.log(result);
  }
});

JavaScript:

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zero elements found by selector"+(e.isReady?"":" (DOM not ready)"));return this}if(t.delegation){e(document).off("submit.form-plugin",this.selector,r).off("click.form-plugin",this.selector,i).on("submit.form-plugin",this.selector,t,r).on("click.form-plugin",this.selector,t,i);return this}return this.ajaxFormUnbind().bind("submit.form-plugin",t,r).bind("click.form-plugin",t,i)};e.fn.ajaxFormUnbind=function(){return this.unbind("submit.form-plugin click.form-plugin")};e.fn.formToArray=function(n,r){var i=[];if(this.length===0){return i}var s=this[0];var o=this.attr("id");var u=n?s.getElementsByTagName("*"):s.elements;var a;if(u&&!/MSIE [678]/.test(navigator.userAgent)){u=e(u).get()}if(o){a=e(':input[form="'+o+'"]').get();if(a.length){u=(u||[]).concat(a)}}if(!u||!u.length){return i}var f,l,c,h,p,d,v;for(f=0,d=u.length;f<d;f++){p=u[f];c=p.name;if(!c||p.disabled){continue}if(n&&s.clk&&p.type=="image"){if(s.clk==p){i.push({name:c,value:e(p).val(),type:p.type});i.push({name:c+".x",value:s.clk_x},{name:c+".y",value:s.clk_y})}continue}h=e.fieldValue(p,true);if(h&&h.constructor==Array){if(r){r.push(p)}for(l=0,v=h.length;l<v;l++){i.push({name:c,value:h[l]})}}else if(t.fileapi&&p.type=="file"){if(r){r.push(p)}var m=p.files;if(m.length){for(l=0;l<m.length;l++){i.push({name:c,value:m[l],type:p.type})}}else{i.push({name:c,value:"",type:p.type})}}else if(h!==null&&typeof h!="undefined"){if(r){r.push(p)}i.push({name:c,value:h,type:p.type,required:p.required})}}if(!n&&s.clk){var g=e(s.clk),y=g[0];c=y.name;if(c&&!y.disabled&&y.type=="image"){i.push({name:c,value:g.val()});i.push({name:c+".x",value:s.clk_x},{name:c+".y",value:s.clk_y})}}return i};e.fn.formSerialize=function(t){return e.param(this.formToArray(t))};e.fn.fieldSerialize=function(t){var n=[];this.each(function(){var r=this.name;if(!r){return}var i=e.fieldValue(this,t);if(i&&i.constructor==Array){for(var s=0,o=i.length;s<o;s++){n.push({name:r,value:i[s]})}}else if(i!==null&&typeof i!="undefined"){n.push({name:this.name,value:i})}});return e.param(n)};e.fn.fieldValue=function(t){for(var n=[],r=0,i=this.length;r<i;r++){var s=this[r];var o=e.fieldValue(s,t);if(o===null||typeof o=="undefined"||o.constructor==Array&&!o.length){continue}if(o.constructor==Array){e.merge(n,o)}else{n.push(o)}}return n};e.fieldValue=function(t,n){var r=t.name,i=t.type,s=t.tagName.toLowerCase();if(n===undefined){n=true}if(n&&(!r||t.disabled||i=="reset"||i=="button"||(i=="checkbox"||i=="radio")&&!t.checked||(i=="submit"||i=="image")&&t.form&&t.form.clk!=t||s=="select"&&t.selectedIndex==-1)){return null}if(s=="select"){var o=t.selectedIndex;if(o<0){return null}var u=[],a=t.options;var f=i=="select-one";var l=f?o+1:a.length;for(var c=f?o:0;c<l;c++){var h=a[c];if(h.selected){var p=h.value;if(!p){p=h.attributes&&h.attributes.value&&!h.attributes.value.specified?h.text:h.value}if(f){return p}u.push(p)}}return u}return e(t).val()};e.fn.clearForm=function(t){return this.each(function(){e("input,select,textarea",this).clearFields(t)})};e.fn.clearFields=e.fn.clearInputs=function(t){var n=/^(?:color|date|datetime|email|month|number|password|range|search|tel|text|time|url|week)$/i;return this.each(function(){var r=this.type,i=this.tagName.toLowerCase();if(n.test(r)||i=="textarea"){this.value=""}else if(r=="checkbox"||r=="radio"){this.checked=false}else if(i=="select"){this.selectedIndex=-1}else if(r=="file"){if(/MSIE/.test(navigator.userAgent)){e(this).replaceWith(e(this).clone(true))}else{e(this).val("")}}else if(t){if(t===true&&/hidden/.test(r)||typeof t=="string"&&e(this).is(t)){this.value=""}}})};e.fn.resetForm=function(){return this.each(function(){if(typeof this.reset=="function"||typeof this.reset=="object"&&!this.reset.nodeType){this.reset()}})};e.fn.enable=function(e){if(e===undefined){e=true}return this.each(function(){this.disabled=!e})};e.fn.selected=function(t){if(t===undefined){t=true}return this.each(function(){var n=this.type;if(n=="checkbox"||n=="radio"){this.checked=t}else if(this.tagName.toLowerCase()=="option"){var r=e(this).parent("select");if(t&&r[0]&&r[0].type=="select-one"){r.find("option").selected(false)}this.selected=t}})};e.fn.ajaxSubmit.debug=false})
</script>
    <script type="text/javascript">
        $(document).ready(function () {
            $('#myform').on('change', '.wpcf7-file', function (e) {
                e.preventDefault();
                var myParent = $(this).parent();
                var filname= $('input[type=file]').val()

                if (filname) { 
                $(this).parent().find('#progress-div').show();          
                $('#myform').ajaxSubmit({
                    // target: '#progress-div123',/**********only for response************/
                    beforeSubmit: function () {
                        myParent.find('#progress-bar').width('0%');
                    },
                    uploadProgress: function (event, position, total, percentComplete) {
                        myParent.find('#progress-bar').width(percentComplete + '%');
                        myParent.find('#progress-bar').html('<div id="progress-status">' + percentComplete + ' %</div>')
                    },
                    success: function showResponse(responseText, statusText, xhr, $form) {

                        //myParent.find('#progress-div').hide(10000);
                    },
                    resetForm: false
                });

                }
                return false;
            });


           /***********Error msg if file not valid***************/
                $('input[type=file]').change(function () {
                var val = $(this).val().toLowerCase();
                var regex = new RegExp("(.*?)\.(pdf|txt|jpg|png|doc|docx|xlx|xls|xlsx|jpg|ppt|pptx|tif|tiff|\n\
                bmp|pcd|gif|bmp|zip|rar|odt|avi|ogg|m4a|mov|mp3|mp4|mpg|wav|wmv|stp|sldprt|sldasm|iges|igs|stl|x_t|step\n\
                |stp|prt|asm|idw|iam|ipt|dxf|dwg|pdf|slddrw|dwf)$");
                if (!(regex.test(val))) {
                    $(this).val('');
                    alert('Please select correct file format');
                }
                });
            /*********End*****************/

        });
</script>

Styles:

<style>
    body{width:610px;}
    #uploadForm {border-top:#F0F0F0 2px solid;background:#FAF8F8;padding:10px;}
    #uploadForm label {margin:2px; font-size:1em; font-weight:bold;}
    .demoInputBox{padding:5px; border:#F0F0F0 1px solid; border-radius:4px; background-color:#FFF;}
    #progress-bar {background-color: #12CC1A;height:20px;color: #FFFFFF;width:0%;-webkit-transition: width .3s;-moz-transition: width .3s;transition: width .3s;}
    .btnSubmit{background-color:#09f;border:0;padding:10px 40px;color:#FFF;border:#F0F0F0 1px solid; border-radius:4px;}
    #progress-div
    {
        border: 1px solid #0fa015;
        border-radius: 4px;
        margin: -35px 2px 7px 295px;
        padding: 5px 0;
        text-align: center;
        width: 277px;
    }

    #targetLayer{width:100%;text-align:center;}
</style>

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