新手请教 拿table的行、列循环啊然后在把innerHTML加起来即可 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 <script javascript>function sumoftable(){var j = 0;for(var i=0;i<=document.form1.table1.rows.length;i++){j = j+document.form1.table1.rwos[i].value;}ta1.innerHtml=j;}</script><form name=form1 methode="post"><table name="table1" id='table1"><tr><td>1</td></tr><tr><td>2</td></tr></table><input type=button name="button1" value="clicked " onclick="javascript:sumoftable()"><textarea name="textarea1" id="ta1"> </textarea>没有调试过自己调试一下,方法是这样的可以参考一下下面我这个上次做的与这个有点像:function addrow(){ if(this.parent.main.table1.rows.length>19){ alert("you have already andded 20 rows sorry to you"); return false; } var j = 0; for(var i=0;i<=this.parent.main.table1.rows.length;i++) { j = j+i; } //rowsvalue=rowsfor+rowsvalue; var oRow1=this.parent.main.table1.insertRow(this.parent.main.table1.rows.length); var cell1 = oRow1.insertCell(-1); var cell2 = oRow1.insertCell(-1); cell1.innerHTML = " "+this.parent.main.table1.rows.length+ " "; cell2.innerHTML = j+this.parent.main.table1.rows.length; //rowsfor++; //return rowsfor; }</script> <body><script javascript>function sumoftable(){var j = 0;for(var i=0;i<document.all("table1").rows.length;i++){j = j+ parseInt(document.all("table1").rows(i).cells(0).innerText);}document.all("ta1").innerHTML=j;}</script><form name=form1 methode="post"><table name="table1" id="table1"><tr><td>1</td></tr><tr><td>2</td></tr></table><input type=button name="button1" value="clicked " onclick="javascript:sumoftable()"><textarea name="textarea1" id="ta1"> </textarea></body> <body><script javascript>function sumoftable(){var j = 0;for(var i=0;i<document.all("table1").rows.length;i++){j = j+ parseInt(document.all("table1").rows(i).cells(0).innerText);}document.all("ta1").innerHTML=j;}</script><form name=form1 methode="post"><table name="table1" id="table1"><tr><td>1</td></tr><tr><td>2</td></tr></table><input type=button name="button1" value="clicked " onclick="javascript:sumoftable()"><textarea name="textarea1" id="ta1"> </textarea></body> 利用js将html表格导出为excel文件 关于区域滚动与元素定位问题 求解 jquery删除行name值得排序问题 这是什么写法? 这两个函数怎么重构成一个函数, 有没有必要? 定义一个对象时:var O=new Object() 与 var O={}两种定义在哪里不一样 js使用xmlhttprequest读取中文出现乱码问题如何解决? 关于js replace 过滤网址中的汉字问题 最小化窗口用JavaScript写,不调有windows组件,在IE6.0能生效 引用了系统的颜色对话框如何判断是按了取消返回的呢 急一个简单的打开窗口的问题 请问如何让光标变成漏斗状和箭头状
function sumoftable(){
var j = 0;
for(var i=0;i<=document.form1.table1.rows.length;i++)
{
j = j+document.form1.table1.rwos[i].value;
}
ta1.innerHtml=j;
}
</script>
<form name=form1 methode="post">
<table name="table1" id='table1">
<tr>
<td>
1
</td>
</tr>
<tr>
<td>
2
</td>
</tr>
</table>
<input type=button name="button1" value="clicked " onclick="javascript:sumoftable()">
<textarea name="textarea1" id="ta1"> </textarea>
没有调试过
自己调试一下,方法是这样的
可以参考一下下面我这个上次做的与这个有点像:
function addrow()
{
if(this.parent.main.table1.rows.length>19){
alert("you have already andded 20 rows sorry to you");
return false;
}
var j = 0;
for(var i=0;i<=this.parent.main.table1.rows.length;i++)
{
j = j+i;
}
//rowsvalue=rowsfor+rowsvalue;
var oRow1=this.parent.main.table1.insertRow(this.parent.main.table1.rows.length);
var cell1 = oRow1.insertCell(-1);
var cell2 = oRow1.insertCell(-1);
cell1.innerHTML = " "+this.parent.main.table1.rows.length+ " ";
cell2.innerHTML = j+this.parent.main.table1.rows.length;
//rowsfor++;
//return rowsfor;
}</script>
<script javascript>
function sumoftable(){
var j = 0;
for(var i=0;i<document.all("table1").rows.length;i++)
{
j = j+ parseInt(document.all("table1").rows(i).cells(0).innerText);
}
document.all("ta1").innerHTML=j;
}
</script>
<form name=form1 methode="post">
<table name="table1" id="table1">
<tr>
<td>
1
</td>
</tr>
<tr>
<td>
2
</td>
</tr>
</table>
<input type=button name="button1" value="clicked " onclick="javascript:sumoftable()">
<textarea name="textarea1" id="ta1"> </textarea>
</body>
<script javascript>
function sumoftable(){
var j = 0;
for(var i=0;i<document.all("table1").rows.length;i++)
{
j = j+ parseInt(document.all("table1").rows(i).cells(0).innerText);
}
document.all("ta1").innerHTML=j;
}
</script>
<form name=form1 methode="post">
<table name="table1" id="table1">
<tr>
<td>
1
</td>
</tr>
<tr>
<td>
2
</td>
</tr>
</table>
<input type=button name="button1" value="clicked " onclick="javascript:sumoftable()">
<textarea name="textarea1" id="ta1"> </textarea>
</body>