更新: 在控制台日志中,它显示为已合并,但长度仍显示最后拖动的长度
我正在使用up_files = event.originalEvent.dataTransfer.files;
来捕获在div中拖放的文件。
当用户第一次拖动文件时,所有文件都移动到up_files
,第二次再次将文件放入div中我怎样才能将这些文件推送到现有的数组列表而不是清除数组并插入upfiles
#fileToUpload is a input file id
#total is div id
示例代码:
$( '#total' ).bind( 'dragover',function(event) {
event.stopPropagation();
event.preventDefault();
});
$( '#total' ).bind( 'drop',function(event) {
event.stopPropagation();
event.preventDefault();
if( upfiles == 0 )
{
upfiles = event.originalEvent.dataTransfer.files;
upfiles = Array.prototype.slice.call(upfiles, 0);
}
else
{
//push the file here
}
$( "#fileToUpload" ).trigger( 'change' );
});
已编辑: 这是改变:
$( "#fileToUpload" ).change( function() {
$('#total').css("background-image","");
var fileIn = $( "#fileToUpload" )[0];
if(!upfiles)
{
upfiles = fileIn.files;
upfiles = Array.prototype.slice.call(upfiles, 0);
}
else {
if(fileIn.files.length > 0 ) {
if( confirm( "Drop: Do you want to clear files selected already?" ) == true )
{
upfiles = fileIn.files;
upfiles = Array.prototype.slice.call(upfiles, 0);
}
else
return;
}
//DISPLAYING FILE HERE USING EACH LOOP
} });
已更新:
我试过这样的话:
$( '#total' ).bind( 'drop',function(event) {
event.stopPropagation();
event.preventDefault();
alert("hello"+upfiles_new);
if( upfiles_new == 0 )
{
upfiles_new = event.originalEvent.dataTransfer.files;
console.dir(upfiles_new);
upfiles = Array.prototype.slice.call(upfiles_new, 0);
}
else {
alert("hello world");
// console.dir(upfiles_new);
upfiles_temp = event.originalEvent.dataTransfer.files;
var upfiles = $.merge(upfiles_temp, upfiles_new)
console.dir(upfiles); // in console log it is merged
upfiles = Array.prototype.slice.call(upfiles, 0); // but in this array it is not showing
alert(print_r(upfiles));
console.dir(upfiles);
}
$( "#fileToUpload" ).trigger( 'change' );
});
我认为我更接近..任何人都可以建议任何修改