能跟163的添加附件功能一样就行了~~~~
解决方案 »
- ExtJs中GRID怎么跨行跨列。。。求DEMO
- 下拉列表框与表格的动态增加问题
- 谁帮我分析下这段JS代码
- 为什么window.captureEvents(Event.MOUSEMOVE|Event.MOUSEUP)无效?
- 求一段从身份证号中取出生日的javascript代码
- 使用Ajax返回一个DataSet对象,客户端怎么用JavaScript处理,取出某行某列的值
- 如何让IE在本地打开就直接能运行js
- [分享]很好的计算机学习资源站点,EBOOK及视频课件
- 一个隐藏Frames问题
- 救命啊!!!……………
- textarea和listbox之间的问题!
- 想刷新整个页面(表格),过去很简单location.reload()就行了,现想用AJAX,怎么做呢?
<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><!-- This is the form -->
<form enctype="multipart/form-data" action="your_script_here.script" method = "post">
<!-- The file element -- NOTE: it has an ID -->
<a href=#? class="addfile">
<input id="my_file_element" class="addfile" type="file" name="file_1" size="1" title="点击选择附件">
</a>
<input type="submit" value=上传>
</form>Files:
<!-- This is where the output will appear -->
<div id="files_list" style="padding:5px;border:1px;border-style:solid;border-color:#0000ff;height:100px;width:600px;"></div>
<script>
<!-- Create an instance of the multiSelector class, pass it the output target and the max number of files -->
var multi_selector = new MultiSelector( document.getElementById( 'files_list' ), 100 );
<!-- Pass in the file element -->
multi_selector.addElement( document.getElementById( 'my_file_element' ) );
</script></body>
</html>