js jquery分别实现动态的文件上传操作按钮的添加和删除

  • 2022-06-20 21:15:35

代码如下:


<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "https://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="https://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>jquery文件上传</title>
<script type="text/javascript" src="jquery-1.7.2.js"></script>
<script type="text/javascript">
var addmore = function() {
var p = document.getelementbyid("p2");
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() {
p.removechild(br);
p.removechild(input);
p.removechild(button);
}

p.appendchild(br);
p.appendchild(input);
p.appendchild(button);
}
//节点的移动
//$(function(){

//});
</script>
</head>

<body>
<p id="p1">
<input type="file" id="upload"/>
<input type="button" id="btn" value="more" onclick="addmore();"/>
</p>
<p id="p2"></p>
</body>

</html>


jquery实现

. 代码如下:


<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "https://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html xmlns="https://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>jquery文件上传</title>
<title>jquery1</title>
<script type="text/javascript" src="jquery-1.7.2.js"></script>
<script type="text/javascript">
/** var addmore = function() {
var p = document.getelementbyid("p2");
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() {
p.removechild(br);
p.removechild(input);
p.removechild(button);
}

p.appendchild(br);
p.appendchild(input);
p.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'/>");
$("#p1").append(br).append(input).append(button);

button.click(function() {
br.remove();
input.remove();
button.remove();
});
});
});
</script>
</head>

<body>
<p id="p1">
<input type="file" id="upload"/>
<input type="button" id="btn" value="more" onclick="addmore();"/>
</p>
<p id="p2"></p>
</body>
</html>

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