使用js及jquery实现动态的文件上传操作按钮的添加和删除。
例1，javascript实现动态文件上传。
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jquery文件上传_www.jb200.com</title>
<script type="text/javascript" src="jquery-1.7.2.js"></script>
<script type="text/javascript">
var addMore = function() {
var div = document.getElementById("div2");
var br = document.createElement("br");
var input = document.createElement("input");
var button = document.createElement("input");
input.setAttribute("type", "file");
button.setAttribute("type", "button");
button.setAttribute("value", "Remove");
button.onclick = function() {
div.removeChild(br);
div.removeChild(input);
div.removeChild(button);
}
div.appendChild(br);
div.appendChild(input);
div.appendChild(button);
}
//节点的移动
//$(function(){
//});
</script>
</head>
<body>
<div id="div1">
<input type="file" id="upload"/>
<input type="button" id="btn" value="more" onclick="addMore();"/>
</div>
<div id="div2"></div>
</body>
</html>
2，jquery实现部分：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>jquery文件上传_www.jb200.com</title>
<script type="text/javascript" src="jquery-1.7.2.js"></script>
<script type="text/javascript">
/** var addMore = function() {
var div = document.getElementById("div2");
var br = document.createElement("br");
var input = document.createElement("input");
var button = document.createElement("input");
input.setAttribute("type", "file");
button.setAttribute("type", "button");
button.setAttribute("value", "Remove");
button.onclick = function() {
div.removeChild(br);
div.removeChild(input);
div.removeChild(button);
}
div.appendChild(br);
div.appendChild(input);
div.appendChild(button);
}**/
//jquery实现文件上传的按钮添加和删除
$(function(){
$("input[type=button]").click(function(){
var br = $("<br>");
var input = $("<input type='file'/>");
var button = $("<input type='button' value='Remove'/>");
$("#div1").append(br).append(input).append(button);
button.click(function() {
br.remove();
input.remove();
button.remove();
});
});
});
</script>
</head>
<body>
<div id="div1">
<input type="file" id="upload"/>
<input type="button" id="btn" value="more" onclick="addMore();"/>
</div>
<div id="div2"></div>
</body>
</html>