我正在開發一個帶進度條的ajax上傳,如果文件輸入不是多個,沒有問題,但我想開發一個多重ajax上傳,並因此我創建了一個「for」循環,直到用戶選擇的文件數量爲止。Ajax in for循環增量變量i值到總長度
當函數進入此處時,indice的值是len變量的值,爲什麼會發生這種情況?
myXhr.upload.addEventListener('progress', function(e) { progressHandlingFunction(e, '.prog'+(indice)) }, false);
的完整代碼:
<script type="text/javascript">
$(document).ready(function(e){
$('#uploader').submit(function(){
var inpf = document.getElementById('files');
var len = inpf.files.length;
//console.log(inpf, len);return false;
for(var i=0; i<len; i++){
var indice = i;
$('div').append('<progress class="prog'+i+'" value="0"></progress><br />');
var formData = new FormData();
formData.append('image', inpf.files[i]);
$.ajax({
url: 'upload1.php', //server script to process data
type: 'POST',
xhr: function() { // custom xhr
var myXhr = $.ajaxSettings.xhr();
if(myXhr.upload){ // check if upload property exists
myXhr.upload.addEventListener('progress', function(e) { progressHandlingFunction(e, '.prog'+(indice)) }, false); // for handling the progress of the upload
}
return myXhr;
},
//Ajax events
//beforeSend: beforeSendHandler,
success: function(data){
completeHandler(data, '.prog'+i);
},
//error: errorHandler,
// Form data
data: formData,
//Options to tell JQuery not to process data or worry about content-type
cache: false,
contentType: false,
processData: false,
});
}
return false;
});
});
function progressHandlingFunction(e, klass){
if(e.lengthComputable){
$(klass).attr({value:e.loaded, max:e.total});
}
}
function completeHandler(data, klass){
$(klass).attr({value:0});
}
</script>
在這裏,你有的jsfiddle與例如: http://jsfiddle.net/Pgq9s/
我沒有看到任何錯誤。似乎運作良好。 – Christian 2013-05-13 11:50:56