我有一个应用程序,您可以在此处访问。如果您打开应用程序,请单击“添加”按钮几次。这将在下表中添加一个新行。在每个表格行中都有一个 AJAX 文件上传器。
现在的问题是,如果我单击除第一行以外的任何行中的“上传”按钮,则上传仅发生在第一行,因此仅上传第一个文件输入。
为什么要这样做,我怎样才能得到它,以便当用户单击“上传”按钮时,“上传”按钮的那一行中的文件输入被上传,而不是第一行被上传?
下面是完整的代码,它在每个表行中附加上传的文件 AJAX 文件:
function insertQuestion(form) {
var $tbody = $('#qandatbl > tbody');
var $tr = $("<tr class='optionAndAnswer' align='center'></tr>");
var $image = $("<td class='image'></td>");
var $fileImage = $("<form action='upload.php' method='post' enctype='multipart/form-data' target='upload_target' onsubmit='startUpload();' >" +
"<p id='f1_upload_process' align='center'>Loading...<br/><img src='Images/loader.gif' /><br/></p><p id='f1_upload_form' align='center'><br/><label>" +
"File: <input name='fileImage' type='file' class='fileImage' /></label><br/><label><input type='submit' name='submitBtn' class='sbtn' value='Upload' /></label>" +
"</p> <iframe id='upload_target' name='upload_target' src='#' style='width:0;height:0;border:0px solid #fff;'></iframe></form>");
$image.append($fileImage);
$tr.append($image);
$tbody.append($tr);
}
function startUpload(){
document.getElementById('f1_upload_process').style.visibility = 'visible';
document.getElementById('f1_upload_form').style.visibility = 'hidden';
return true;
}
function stopUpload(success){
var result = '';
if (success == 1){
result = '<span class="msg">The file was uploaded successfully!<\/span><br/><br/>';
}
else {
result = '<span class="emsg">There was an error during file upload!<\/span><br/><br/>';
}
document.getElementById('f1_upload_process').style.visibility = 'hidden';
document.getElementById('f1_upload_form').innerHTML = result + '<label>File: <input name="fileImage" type="file"/><\/label><label><input type="submit" name="submitBtn" class="sbtn" value="Upload" /><\/label>';
document.getElementById('f1_upload_form').style.visibility = 'visible';
return true;
}
更新:
当前代码:
var $fileImage = $("<form action='upload.php' method='post' enctype='multipart/form-data' target='upload_target' onsubmit='startUpload(this);' >" +
"<p class='f1_upload_process' align='center'>Loading...<br/><img src='Images/loader.gif' /><br/></p><p class='f1_upload_form' align='center'><br/><label>" +
"File: <input name='fileImage' type='file' class='fileImage' /></label><br/><label><input type='submit' name='submitBtn' class='sbtn' value='Upload' /></label>" +
"</p> <iframe class='upload_target' name='upload_target' src='#' style='wclassth:0;height:0;border:0px solclass #fff;'></iframe></form>");
function stopUpload(success, source_form){
var result = '';
if (success == 1){
result = '<span class="msg">The file was uploaded successfully!<\/span><br/><br/>';
}
else {
result = '<span class="emsg">There was an error during file upload!<\/span><br/><br/>';
}
$(source_form).find('.f1_upload_process').style.visibility = 'hidden';
$(source_form).find('.f1_upload_form').innerHTML = result + '<label>File: <input name="fileImage" type="file"/><\/label><label><input type="submit" name="submitBtn" class="sbtn" value="Upload" /><\/label>';
$(source_form).find('.f1_upload_form').style.visibility = 'visible';
return true;
}
为什么我在下面的这一行出现错误:
$(source_form).find('.f1_upload_form').style.visibility = 'visible';