共享-完美的多附件上传效果。该怎么解决

共享-----完美的多附件上传效果。
一下的代码是51js上找的一段代码

结合 patchclass(黑翼) 提供的163上的效果实现的。

供大家研究。

<html>

<head>

<style>
a.addfile {
background-image:url(http://p.mail.163.com/js31style/lib/0703131650/163blue/f1.gif);
background-repeat:no-repeat;
background-position:-823px -17px;
display:block;
float:left;
height:20px;
margin-top:-1px;
position:relative;
text-decoration:none;
top:0pt;
width:80px;
}

input.addfile {
/*left:-18px;*/
}

input.addfile {
cursor:pointer !important;
height:18px;
left:-13px;
filter:alpha(opacity=0);
position:absolute;
top:5px;
width:1px;
z-index: -1;
}
</style>

<script type= "text/javascript ">

function MultiSelector( list_target, max ){

// Where to write the list
this.list_target = list_target;
// How many elements?
this.count = 0;
// How many elements?
this.id = 0;
// Is there a maximum?
if( max ){
this.max = max;
} else {
this.max = -1;
};

/**
* Add a new file input element
*/
this.addElement = function( element ){

// Make sure it 's a file input element
if( element.tagName == 'INPUT ' && element.type == 'file ' ){

// Element name -- what number am I?
element.name = 'file_ ' + this.id++;

// Add reference to this object
element.multi_selector = this;

// What to do when a file is selected
element.onchange = function(){

// New file input
var new_element = document.createElement( 'input ' );
new_element.type = 'file ';
new_element.size = 1;
new_element.className = "addfile ";

// Add new element
this.parentNode.insertBefore( new_element, this );

// Apply 'update ' to element
this.multi_selector.addElement( new_element );

// Update list
this.multi_selector.addListRow( this );

// Hide this: we can 't use display:none because Safari doesn 't like it
this.style.position = 'absolute ';
this.style.left = '-1000px ';

};

// If we 've reached maximum number, disable input element
if( this.max != -1 && this.count > = this.max ){
element.disabled = true;
};

// File element counter

this.count++;
// Most recent element
this.current_element = element;

} else {
// This can only be applied to file input elements!
alert( 'Error: not a file input element ' );
};

};

/**
* Add a new row to the list of files
*/
this.addListRow = function( element ){

// Row div
var new_row = document.createElement( 'div ' );

// Delete button
var new_row_button = document.createElement( 'input ' );
new_row_button.type = 'button ';
new_row_button.value = 'Delete ';

// References
new_row.element = element;

// Delete function
new_row_button.onclick= function(){

// Remove element from form
this.parentNode.element.parentNode.removeChild( this.parentNode.element );

// Remove this row from the list
this.parentNode.parentNode.removeChild( this.parentNode );

// Decrement counter
this.parentNode.element.multi_selector.count--;

// Re-enable input element (if it 's disabled)
this.parentNode.element.multi_selector.current_element.disabled = false;

// Appease Safari
// without it Safari wants to reload the browser window
// which nixes your already queued uploads
return false;
};

// Set row value
new_row.innerHTML = element.value;

// Add button
new_row.appendChild( new_row_button );

// Add it to the list
this.list_target.appendChild( new_row );

};

};
</script>
</head>

<body>


<form enctype= "multipart/form-data " action= "your_script_here.script " method = "post ">

<a href=#? class= "addfile ">
<input id= "my_file_element " class= "addfile " type= "file " name= "file_1 " size= "1 ">
</a>
<input type= "submit " value=上传>
</form>

Files:

<div id= "files_list " style= "padding:5px;border:1px;border-style:solid;border-color:#0000ff;height:100px;width:600px; "> </div>
<script>

setdiv();
}

function checkAgainFile(infilename ){
var flag =false;
for(var i=0;i <filename.length;i++){
if(filename[i]==infilename)flag = true;
}
return flag;

}

function checkFileNum(){
var flag =false;
if(filename.length> =maxNum ){
flag = true;
}

return flag;
}
</script>
改了下，这次是改对了
[解决办法]
楼主的这个不错，不过如果再加上同名文件验证就比较完善了
[解决办法]
mark
[解决办法]
这近也在做这个，就差一点点可以到163的样子了，先看看LZ的啦，接分呀，希望可以一起讨论讨论

共享-完美的多附件上传效果。该怎么解

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