js 動(dòng)態(tài)添加標(biāo)簽（新增一行，其實(shí)很簡(jiǎn)單，就是幾個(gè)函數(shù)的應(yīng)用
2024-05-06 14:15:53
供稿：網(wǎng)友
代碼如下:
<!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>
<title>add_line</title>
<script language="javascript" type="text/jscript"><!--
function add_input_file(tbfile, index)
{
file_name = "file" + index;
var tr_file = document.createElement("tr");
var td_file = document.createElement("td");
var input_file = document.createElement("input")
input_file.setAttribute("type","file")
input_file.setAttribute("size","50")
input_file.setAttribute("name",file_name)
td_file.appendChild(input_file)
tr_file.appendChild(td_file)
tbfile.appendChild(tr_file)
}
function add_one_file()
{
var tb_file = document.getElementById("upload_file");
var count_file = document.getElementById("upload_file").childNodes.length;
//window.alert(steps_nums);
add_input_file(tb_file, count_file);
}
// --></script>
</head>
<body>
<div style="text-align: center" style="text-align: center">
<form>
<table width="90%">
<tr>
<td>
<BR />
<BR />
<h5>配置文件上傳</h5>
</td>
</tr>
<tr>
<td>
<table id="upload_file">
<tr class="tabletext">
<td><input type="file" name="job" size="50"/></td>
</tr>
<tr class="tabletext">
<td><input type="file" name='file2' size="50"/></td>
</tr>
<tr class="tabletext">
<td><input type="file" name='file3'size="50"/></td>
</tr>
</table>
</td>
</tr>
<tr>
<td align="left">
<input type="button" value="新增一行" onclick="add_one_file()"/>
<input type="submit" value="保 存"/>
<input name="ciname" value="{{ciname}}"/>
<input name="type" value="default"/>
</td>
</tr>
</table>
</form>
</div>
</body>
</html>
把所有代碼拷下另存為一個(gè)html文件，在瀏覽器中打開(kāi)，點(diǎn)擊“新增一行”按鈕就可以,以下是對(duì)js函數(shù)的解釋
document.createElement 創(chuàng)建一種頁(yè)面標(biāo)簽
setAttribute:為某一標(biāo)簽設(shè)置屬性
appendChild:在另一標(biāo)簽中添加一子標(biāo)簽
