通过两个按钮来控制,文本框的数量的增加,减少。怎么实现。 str+=i+':<input type="text" name="text'+i+'"><br>';window.tdid.innerHTML=str;<td align="left" id="tdid"></td> 解决方案 » 免费领取超大流量手机卡,每月29元包185G流量+100分钟通话, 中国电信官方发货 <head><title>Shi's sample</title><script language="JavaScript">function addRowToTable(){ var tbl = document.getElementById('tblSample'); var lastRow = tbl.rows.length; var iteration = lastRow; var row = tbl.insertRow(lastRow); var cellLeft = row.insertCell(0); var textNode = document.createTextNode(iteration); cellLeft.appendChild(textNode); var cellRight = row.insertCell(1); var el = document.createElement('input'); el.setAttribute('type', 'text'); el.setAttribute('name', 'txtRow' + iteration); el.setAttribute('size', '40'); cellRight.appendChild(el);}function removeRowFromTable(){ var tbl = document.getElementById('tblSample'); var lastRow = tbl.rows.length; if (lastRow > 2) tbl.deleteRow(lastRow - 1);}</script></head><body><form action="tableaddrow_nw.html" method="get"><input type="button" value="Add" onclick="addRowToTable();" /><input type="button" value="Remove" onclick="removeRowFromTable();" /><table border="1" id="tblSample"> <tr> <th colspan="2">Sample table</th> </tr> <tr> <td>1</td> <td><input type="text" name="txtRow1" size="40" /></td> </tr></table></form></body> <HTML><HEAD><TITLE> New Document </TITLE><META NAME="Generator" CONTENT="EditPlus"><META NAME="Author" CONTENT=""><META NAME="Keywords" CONTENT=""><META NAME="Description" CONTENT=""><SCRIPT LANGUAGE="JavaScript"><!--var fr=document.form1;function addn(){ document.form1.a.value++;}//--></SCRIPT><body><FORM METHOD=POST ACTION="" name="form1"><INPUT TYPE="text" NAME="a"><INPUT TYPE="button" onclick="addn()"><INPUT TYPE="submit"></FORM></body></html> : ghjhot(ghjhot) ( ) 信誉:105 2004-08-18 17:45:00 得分: 0 大哥!你给我写了增加了,还需要一个减少的怎么做呀。!!!!!!!!!!!!!!!!!!!!!!!!!!! <SCRIPT LANGUAGE="JavaScript">function addn(i){ document.form1.a.value -= (-i);}</SCRIPT><FORM METHOD=POST ACTION="" name="form1"><INPUT TYPE="button" onclick="addn(-10)" value="-10"><INPUT TYPE="button" onclick="addn(-1)" value="-"><INPUT TYPE="text" NAME="a"><INPUT TYPE="button" onclick="addn(+1)" value="+"><INPUT TYPE="button" onclick="addn(+10)" value="+10"></FORM> select u from Userlist中的u是怎么来的? 如何把文本框中的html的特殊字符转换了啊? 获取鼠标坐标位置中的问题 web页面加载问题 新手求救:如何检查一个变量是否为对象,或者说如何检查一个变量是否已初始化 getElementById,为什么为null? 菜MM提问:请高手帮忙,问题解决马上结贴给分 如何实现JvvaScript中的网页重定向? 急,求怎么样可以同时关闭N个窗口?在线等! 关于在客户端计算两个时间的差的问题? 关于关闭窗口的问题 IE 表单 POST 提交的疑问。
<title>Shi's sample</title><script language="JavaScript">function addRowToTable()
{
var tbl = document.getElementById('tblSample');
var lastRow = tbl.rows.length;
var iteration = lastRow;
var row = tbl.insertRow(lastRow);
var cellLeft = row.insertCell(0);
var textNode = document.createTextNode(iteration);
cellLeft.appendChild(textNode);
var cellRight = row.insertCell(1);
var el = document.createElement('input');
el.setAttribute('type', 'text');
el.setAttribute('name', 'txtRow' + iteration);
el.setAttribute('size', '40');
cellRight.appendChild(el);
}
function removeRowFromTable()
{
var tbl = document.getElementById('tblSample');
var lastRow = tbl.rows.length;
if (lastRow > 2) tbl.deleteRow(lastRow - 1);
}
</script>
</head><body>
<form action="tableaddrow_nw.html" method="get"><input type="button" value="Add" onclick="addRowToTable();" />
<input type="button" value="Remove" onclick="removeRowFromTable();" />
<table border="1" id="tblSample">
<tr>
<th colspan="2">Sample table</th>
</tr>
<tr>
<td>1</td>
<td><input type="text" name="txtRow1" size="40" /></td>
</tr>
</table></form>
</body>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<SCRIPT LANGUAGE="JavaScript">
<!--
var fr=document.form1;
function addn()
{
document.form1.a.value++;
}
//-->
</SCRIPT>
<body>
<FORM METHOD=POST ACTION="" name="form1">
<INPUT TYPE="text" NAME="a">
<INPUT TYPE="button" onclick="addn()">
<INPUT TYPE="submit">
</FORM>
</body>
</html>
大哥!
你给我写了增加了,还需要一个减少的怎么做呀。!!!!!!!!!!!!!!!!!!!!!!!!!!!
function addn(i){
document.form1.a.value -= (-i);
}
</SCRIPT><FORM METHOD=POST ACTION="" name="form1">
<INPUT TYPE="button" onclick="addn(-10)" value="-10">
<INPUT TYPE="button" onclick="addn(-1)" value="-">
<INPUT TYPE="text" NAME="a">
<INPUT TYPE="button" onclick="addn(+1)" value="+">
<INPUT TYPE="button" onclick="addn(+10)" value="+10">
</FORM>