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lzkyo
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仿网易界面

SafariJavaScriptHTML 
阅读更多 
<html>    
   
<head>    
   
<title>Add Files</title>    
   
<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="http://127.0.0.1:8080/xxx/fileUploadAction.action" method="post">    
   
<!-- The file element -- NOTE: it has an ID -->    
   
<a href="javascript:void(1==1);" class="addfile" style="cursor: default;" hidefocus="true">    
   
<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>

 

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