js 实例 some3
30为表格创建了一个标题
<html>
<head>
<script type="text/javascript">
function createCaption()
{
var x=document.getElementById('myTable').createCaption()
x.innerHTML="我的表格标题"
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>Row1 cell1</td>
<td>Row1 cell2</td>
</tr>
<tr>
<td>Row2 cell1</td>
<td>Row2 cell2</td>
</tr>
</table>
<br />
<input type="button" onClick="createCaption()" value="创建标题">
</body>
</html>
31.
从表格删除行
<html>
<head>
<script type="text/javascript">
function deleteRow(r)
{
var i=r.parentNode.parentNode.rowIndex
document.getElementById('myTable').deleteRow(i)
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>Row 1</td>
<td><input type="button" value="删除" onClick="deleteRow(this)"></td>
</tr>
<tr>
<td>Row 2</td>
<td><input type="button" value="删除" onClick="deleteRow(this)"></td>
</tr>
<tr>
<td>Row 3</td>
<td><input type="button" value="删除" onClick="deleteRow(this)"></td>
</tr>
</table>
</body>
</html>
32.
向表格添加新行 - 然后向其添加内容
<html>
<head>
<script type="text/javascript">
function insRow()
{
var x=document.getElementById('myTable').insertRow(0)
var y=x.insertCell(0)
var z=x.insertCell(1)
y.innerHTML="NEW CELL1"
z.innerHTML="NEW CELL2"
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>Row1 cell1</td>
<td>Row1 cell2</td>
</tr>
<tr>
<td>Row2 cell1</td>
<td>Row2 cell2</td>
</tr>
<tr>
<td>Row3 cell1</td>
<td>Row3 cell2</td>
</tr>
</table>
<br />
<input type="button" onClick="insRow()" value="插入行">
</body>
</html>
33对齐行中的单元格内容
<html>
<head>
<script type="text/javascript">
function leftAlign()
{
document.getElementById('header').align="left";
}
</script>
</head>
<body>
<table width="100%" border="1">
<tr id="header">
<th>名</th>
<th>姓</th>
</tr>
<tr>
<td>John</td>
<td>Adams</td>
</tr>
</table>
<br />
<input type="button" onClick="leftAlign()" value="左对齐表格行" />
</body>
</html>
34垂直对齐行中的单元格内容
<html>
<head>
<script type="text/javascript">
function topAlign()
{
document.getElementById('tr2').vAlign="top";
}
</script>
</head>
<body>
<table width="50%" border="1">
<tr id="tr1">
<th>名</th>
<th>姓</th>
<th>文本</th>
</tr>
<tr id="tr2">
<td>John</td>
<td>Adams</td>
<td>你们好。我是名字是 John Adams。
在本例中，我需要一段长的文本。
在本例中，我需要一段长的文本。
在本例中，我需要一段长的文本。</td>
</tr>
</table>
<br />
<input type="button" onClick="topAlign()" value="上对齐表格行" />
</body>
</html>
35更改表格单元格中的内容
<html>
<head>
<script type="text/javascript">
function changeContent()
{
var x=document.getElementById('myTable').rows[0].cells
x[0].innerHTML="新的内容"
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>Row1 cell1</td>
<td>Row1 cell2</td>
</tr>
<tr>
<td>Row2 cell1</td>
<td>Row2 cell2</td>
</tr>
<tr>
<td>Row3 cell1</td>
<td>Row3 cell2</td>
</tr>
</table>
<form>
<input type="button" onClick="changeContent()" value="改变内容">
</form>
</body>
</html>
36.更改表元横跨的列数
<html>
<head>
<script type="text/javascript">
function changeColSpan()
{
document.getElementById("td1").colSpan="2";
}
</script>
</head>
<body>
<table border="1">
<tr>
<th>名</th>
<th>姓</th>
</tr>
<tr>
<td id="td1">John</td>
<td id="td2">Adams</td>
</tr>
</table>
<br />
<input type="button" onclick=changeColSpan() value="改变 colspan" />
</body>
</html>
37简单的计时
<html>
<head>
<script type="text/javascript">
function timedMsg()
{
var t=setTimeout("alert('5 seconds!')",5000)
}
</script>
</head>
<body>
<form>
<input type="button" value="显示计时的消息框！" onClick = "timedMsg()">
</form>
<p>点击上面的按钮。5 秒后会显示一个消息框。</p>
</body>
</html>
38
<html>
<head>
<script type="text/javascript">
var c=0
var t
function timedCount()
{
document.getElementById('txt').value=c
c=c+1
t=setTimeout("timedCount()",1000)
}
</script>
</head>
<body>
<form>
<input type="button" value="开始计时！" onClick="timedCount()">
<input type="text" id="txt">
</form>
<p>请点击上面的按钮。输入框会从 0 开始一直进行计时。</p>
</body>
</html>
39无穷循环中的计时
<html>
<head>
<script type="text/javascript">
var c=0
var t
function timedCount()
{
document.getElementById('txt').value=c
c=c+1
t=setTimeout("timedCount()",1000)
}
</script>
</head>
<body>
<form>
<input type="button" value="开始计时！" onClick="timedCount()">
<input type="text" id="txt">
</form>
<p>请点击上面的按钮。输入框会从 0 开始一直进行计时。</p>
</body>
</html>
40.
无穷循环中的计时 - 带有一个停止按钮
<html>
<head>
<script type="text/javascript">
var c=0
var t
function timedCount()
{
document.getElementById('txt').value=c
c=c+1
t=setTimeout("timedCount()",1000)
}
function stopCount()
{
clearTimeout(t)
}
</script>
</head>
<body>
<form>
<input type="button" value="开始计时！" onClick="timedCount()">
<input type="text" id="txt">
<input type="button" value="停止计时！" onClick="stopCount()">
</form>
<p>
请点击上面的“开始计时”按钮。输入框会从 0 开始一直进行计时。点击“停止计时”可停止计时。
</p>
</body>
</html>
41.一个时钟
<html>
<head>
<script type="text/javascript">
function startTime()
{
var today=new Date()
var h=today.getHours()
var m=today.getMinutes()
var s=today.getSeconds()
// add a zero in front of numbers<10
m=checkTime(m)
s=checkTime(s)
document.getElementById('txt').innerHTML=h+":"+m+":"+s
t=setTimeout('startTime()',500)
}
function checkTime(i)
{
if (i<10)
{i="0" + i}
return i
}
</script>
</head>
<body onLoad="startTime()">
<div id="txt"></div>
</body>
</html>
<!---->
<html>
<head>
<script type="text/javascript">
function createCaption()
{
var x=document.getElementById('myTable').createCaption()
x.innerHTML="我的表格标题"
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>Row1 cell1</td>
<td>Row1 cell2</td>
</tr>
<tr>
<td>Row2 cell1</td>
<td>Row2 cell2</td>
</tr>
</table>
<br />
<input type="button" onClick="createCaption()" value="创建标题">
</body>
</html>
31.
从表格删除行
<html>
<head>
<script type="text/javascript">
function deleteRow(r)
{
var i=r.parentNode.parentNode.rowIndex
document.getElementById('myTable').deleteRow(i)
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>Row 1</td>
<td><input type="button" value="删除" onClick="deleteRow(this)"></td>
</tr>
<tr>
<td>Row 2</td>
<td><input type="button" value="删除" onClick="deleteRow(this)"></td>
</tr>
<tr>
<td>Row 3</td>
<td><input type="button" value="删除" onClick="deleteRow(this)"></td>
</tr>
</table>
</body>
</html>
32.
向表格添加新行 - 然后向其添加内容
<html>
<head>
<script type="text/javascript">
function insRow()
{
var x=document.getElementById('myTable').insertRow(0)
var y=x.insertCell(0)
var z=x.insertCell(1)
y.innerHTML="NEW CELL1"
z.innerHTML="NEW CELL2"
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>Row1 cell1</td>
<td>Row1 cell2</td>
</tr>
<tr>
<td>Row2 cell1</td>
<td>Row2 cell2</td>
</tr>
<tr>
<td>Row3 cell1</td>
<td>Row3 cell2</td>
</tr>
</table>
<br />
<input type="button" onClick="insRow()" value="插入行">
</body>
</html>
33对齐行中的单元格内容
<html>
<head>
<script type="text/javascript">
function leftAlign()
{
document.getElementById('header').align="left";
}
</script>
</head>
<body>
<table width="100%" border="1">
<tr id="header">
<th>名</th>
<th>姓</th>
</tr>
<tr>
<td>John</td>
<td>Adams</td>
</tr>
</table>
<br />
<input type="button" onClick="leftAlign()" value="左对齐表格行" />
</body>
</html>
34垂直对齐行中的单元格内容
<html>
<head>
<script type="text/javascript">
function topAlign()
{
document.getElementById('tr2').vAlign="top";
}
</script>
</head>
<body>
<table width="50%" border="1">
<tr id="tr1">
<th>名</th>
<th>姓</th>
<th>文本</th>
</tr>
<tr id="tr2">
<td>John</td>
<td>Adams</td>
<td>你们好。我是名字是 John Adams。
在本例中，我需要一段长的文本。
在本例中，我需要一段长的文本。
在本例中，我需要一段长的文本。</td>
</tr>
</table>
<br />
<input type="button" onClick="topAlign()" value="上对齐表格行" />
</body>
</html>
35更改表格单元格中的内容
<html>
<head>
<script type="text/javascript">
function changeContent()
{
var x=document.getElementById('myTable').rows[0].cells
x[0].innerHTML="新的内容"
}
</script>
</head>
<body>
<table id="myTable" border="1">
<tr>
<td>Row1 cell1</td>
<td>Row1 cell2</td>
</tr>
<tr>
<td>Row2 cell1</td>
<td>Row2 cell2</td>
</tr>
<tr>
<td>Row3 cell1</td>
<td>Row3 cell2</td>
</tr>
</table>
<form>
<input type="button" onClick="changeContent()" value="改变内容">
</form>
</body>
</html>
36.更改表元横跨的列数
<html>
<head>
<script type="text/javascript">
function changeColSpan()
{
document.getElementById("td1").colSpan="2";
}
</script>
</head>
<body>
<table border="1">
<tr>
<th>名</th>
<th>姓</th>
</tr>
<tr>
<td id="td1">John</td>
<td id="td2">Adams</td>
</tr>
</table>
<br />
<input type="button" onclick=changeColSpan() value="改变 colspan" />
</body>
</html>
37简单的计时
<html>
<head>
<script type="text/javascript">
function timedMsg()
{
var t=setTimeout("alert('5 seconds!')",5000)
}
</script>
</head>
<body>
<form>
<input type="button" value="显示计时的消息框！" onClick = "timedMsg()">
</form>
<p>点击上面的按钮。5 秒后会显示一个消息框。</p>
</body>
</html>
38
<html>
<head>
<script type="text/javascript">
var c=0
var t
function timedCount()
{
document.getElementById('txt').value=c
c=c+1
t=setTimeout("timedCount()",1000)
}
</script>
</head>
<body>
<form>
<input type="button" value="开始计时！" onClick="timedCount()">
<input type="text" id="txt">
</form>
<p>请点击上面的按钮。输入框会从 0 开始一直进行计时。</p>
</body>
</html>
39无穷循环中的计时
<html>
<head>
<script type="text/javascript">
var c=0
var t
function timedCount()
{
document.getElementById('txt').value=c
c=c+1
t=setTimeout("timedCount()",1000)
}
</script>
</head>
<body>
<form>
<input type="button" value="开始计时！" onClick="timedCount()">
<input type="text" id="txt">
</form>
<p>请点击上面的按钮。输入框会从 0 开始一直进行计时。</p>
</body>
</html>
40.
无穷循环中的计时 - 带有一个停止按钮
<html>
<head>
<script type="text/javascript">
var c=0
var t
function timedCount()
{
document.getElementById('txt').value=c
c=c+1
t=setTimeout("timedCount()",1000)
}
function stopCount()
{
clearTimeout(t)
}
</script>
</head>
<body>
<form>
<input type="button" value="开始计时！" onClick="timedCount()">
<input type="text" id="txt">
<input type="button" value="停止计时！" onClick="stopCount()">
</form>
<p>
请点击上面的“开始计时”按钮。输入框会从 0 开始一直进行计时。点击“停止计时”可停止计时。
</p>
</body>
</html>
41.一个时钟
<html>
<head>
<script type="text/javascript">
function startTime()
{
var today=new Date()
var h=today.getHours()
var m=today.getMinutes()
var s=today.getSeconds()
// add a zero in front of numbers<10
m=checkTime(m)
s=checkTime(s)
document.getElementById('txt').innerHTML=h+":"+m+":"+s
t=setTimeout('startTime()',500)
}
function checkTime(i)
{
if (i<10)
{i="0" + i}
return i
}
</script>
</head>
<body onLoad="startTime()">
<div id="txt"></div>
</body>
</html>
<!---->