200多个网页javascript技巧收集大汇总！

75.屏蔽汉字和空格
<input name="txt"><input type="submit" >//

76.用javascript判断文件是否存在
function Exists(filespec)
{
if (filespec)
{
  var fso;
  fso = new ActiveXObject("Scripting.FileSystemObject");
  alert(fso.FileExists(filespec));
}
}
选择图片 <input type=file name=f1><p>
<input type="submit" >//

77.获得当前的文本框选中的文字
<input  value=123>//

78.跳转至目标页面，同时不可返回
<a href="javascript:location.replace([url=http://www.upschool.com.cn]http://www.upschool.com.cn'[/url])">教程中国</a>//

79.获得当前的行是表格的第几行
<script>
function getrow(obj)
{
if(event.srcElement.tagName=="TD"){
curRow=event.srcElement.parentElement;
alert("这是第"+(curRow.rowIndex+1)+"行");

}
}
</script>

<table border="1" width="100%" onclick=getrow(this)>
  <tr>
<td width="20%">　</td>
<td width="20%">　</td>
<td width="20%">　</td>
<td width="20%">　</td>
<td width="20%">　</td>
  </tr>
  <tr>
<td width="20%">　</td>
<td width="20%">　</td>
<td width="20%">　</td>
<td width="20%">　</td>
<td width="20%">　</td>
  </tr>
</table>//

80.删除表格某行，xx表示某行，下标从0开始计算
document.all.myTable.deleteRow(xx)//

81.动态的向表格中添加行
<table id="t1" border="1">
</table>
<script language="JavaScript">
function add()
{
t1.insertRow().insertCell().innerHTML = '<input name="test'+t1.rows.length+'">';
}//

82.event.x,event.clientX,event.offsetX区别：
x:设置或者是得到鼠标相对于目标事件的父元素的外边界在x坐标上的位置。 clientX:相对于客户区域的x坐标位置，不

包括滚动条，就是正文区域。 offsetx：设置或者是得到鼠标相对于目标事件的父元素的内边界在x坐标上的位置。
screenX:相对于用户屏幕。

83.显示是鼠标按钮的哪个
<body >点Mouse看看//

84.打开C盘
<form action="file:///c|/"><input type="submit" value="c:\ drive"></form>//

85.当前屏幕的分辨率
screen.width、screen.height//

86.设置表格中的内容
tbl.rows[0].cells[1].innerText=document.form.text1.value;//

87.本地快捷键
<p><a href="file:///::{208D2C60-3AEA-1069-A2D7-08002B30309D}" target="_blank">网上邻居</a></p>
<p><a href="file:///::{20D04FE0-3AEA-1069-A2D8-08002B30309D}\d:\web" target="_blank">我的电脑</a></p>
<p><a href="file:///::{450D8FBA-AD25-11D0-98A8-0800361B1103}" target="_blank">我的文档</a></p>
<p><a href="file:///::{645FF040-5081-101B-9F08-00AA002F954E}" target="_blank">回收站</a></p>
<p><a href="file:///::{20D04FE0-3AEA-1069-A2D8-08002B30309D}\::{21EC2020-3AEA-1069-A2DD-08002B30309D}"

target="_blank">控制面板</a></p>
<p><a href="file:///::{7007ACC7-3202-11D1-AAD2-00805FC1270E}">拨号网络</a>(windows 2000)</p>


88.IE菜单
<button ><font face="webdings">0</font></button>//改变按钮上的图片
<input type=button  > //创建新连接
<input type=button  > //打印
<input type=button  >//另存为htm
<input type=button  >//另存为txt
document.execCommand("SaveAs")//保存为
document.execCommand('undo')//撤销上一次操作

89.web对话框
<SCRIPT>
var c;
contents+='<title>你要关闭我吗</title>';
contents+='<body bgcolor=menu>';
contents+='<table width=100% height=100% border=0>';
contents+='<tr><td align=center>';
contents+='你要关闭我吗？<br>';
contents+='<img src=dark.gif onclick=self.close() alt="关闭">';
contents+='<img src=jet.gif onclick=self.close() alt="全是关闭">';
contents+='</td></tr></table>';
showModalDialog("about:"+contents+"","","dialogHeight:50px;dialogWidth:250px;help:no;status:no")
document.write(contents);
</SCRIPT>//

90.取第x,y的值
<button ></button>//

91.向新打开的网页上写内容
newwin=window.open('about:blank','','top=10');
newwin.document.write('');//

93.返回
javascript:history.go(-2);//

94.将页面上选中的内容复制到剪贴板
abcdefg
<input type='button'

value='复制页面选中

的字符'>//
95.将页面上选中的内容复制到剪贴板
<INPUT TYPE="text" NAME="">kjhkjhkhkj<INPUT TYPE="button" >////

96.鼠标移到下拉框时自动全部打开
<select  ></select>//

97.获得本机的文件
var fso = new ActiveXObject("Scripting.FileSystemObject");
var f1 = fso.GetFile("C:\\bsitcdata\\ejbhome.xml");
alert("File last modified: " + f1.DateLastModified); //

98.判断客户端是否是IE浏览器
因为 document.all 是 IE 的特有属性，所以通常用这个方法来判断客户端是否是IE浏览器 ,document.all?1:0;

99.创建新的下拉框选项
new Option(text,value)这样的函数//

100.在页面上画柱状图
<STYLE>
td{}{font-size:12px}
body{}{font-size:12px}
v\:*{}{behavior:url(#default#VML);} //这里声明了v作为VML公用变量
</STYLE>
<SCRIPT LANGUAGE="JavaScript">
mathstr=12;
document.write ("<v:rect fillcolor='red'

style='width:20;color:navy;height:"+5000/(1000/mathstr)+"'><br> %"+mathstr+"<br>4人<v:Extrusion

backdepth='15pt' on='true'/></v:rect>")
</SCRIPT>
<v:rect fillcolor='red' style='width:20;color:navy;height:200'><br>%12<br>4人<v:Extrusion

backdepth='15pt' on='true'/></v:rect>
<v:rect fillcolor='yellow' style='width:20;color:navy;height:100'><br>%12<br>4人<v:Extrusion

backdepth='15pt' on='true'/></v:rect>//

101.饼图
<style>
v\:*    {}{ behavior: url(#default#VML) }
o\:*    {}{ behavior: url(#default#VML) }
.shape {}{ behavior: url(#default#VML) }
</style>
<script language="javascript">
function show(pie)
{
pie.strokecolor=pie.fillcolor;
pie.strokeweight=10;
div1.innerHTML="<font size=2 color=red> " + pie.id +"</font> <font size=2>" + pie.title + "</font>";
}
function hide(pie)
{
pie.strokecolor="white";
pie.strokeweight=1;
div1.innerHTML="";
}
</script>
</head>
<body>
<v:group style='width: 5cm; height: 5cm' coordorigin='0,0' coordsize='250,250'>
<v:shape id='asp技术' style='width:10;height:10;top:10;left:0' title='得票数:6 比例:40.00%'

  href=[url=http://www.upschool.com.cn]http://www.upschool.com.cn'[/url]

CoordSize='10,10' strokecolor='white' fillcolor='#ffff33'><v:path v='m 300,200 ae

300,200,200,150,0,9437184 xe'/></v:shape>
<v:shape id='php' style='width:10;height:10;top:10;left:0' title='得票数:1 比例:6.67%'

  href=[url=http://www.upschool.com.cn]http://www.upschool.com.cn'[/url]

CoordSize='10,10' strokecolor='white' fillcolor='#ff9933'><v:path v='m 300,200 ae

300,200,200,150,9437184,1572864 xe'/></v:shape>
<v:shape id='jsp' style='width:10;height:10;top:10;left:0' title='得票数:2 比例:13.33%'

  href=[url=http://www.upschool.com.cn]http://www.upschool.com.cn'[/url]

CoordSize='10,10' strokecolor='white' fillcolor='#3399ff'><v:path v='m 300,200 ae

300,200,200,150,11010048,3145728 xe'/></v:shape>
<v:shape id='c#写的.netWEB程序' style='width:10;height:10;top:10;left:0' title='得票数:3 比例:20.00%'

  href=[url=http://www.upschool.com.cn]http://www.upschool.com.cn'[/url]

CoordSize='10,10' strokecolor='white' fillcolor='#99ff33'><v:path v='m 300,200 ae

300,200,200,150,14155776,4718592 xe'/></v:shape>
<v:shape id='vb.net写的.netWEB程序' style='width:10;height:10;top:10;left:0' title='得票数:2 比例:13.33%'

  href=[url=http://www.upschool.com.cn]http://www.upschool.com.cn'[/url]

CoordSize='10,10' strokecolor='white' fillcolor='#ff6600'><v:path v='m 300,200 ae

300,200,200,150,18874368,3145728 xe'/></v:shape>
<v:shape id='xml技术' style='width:10;height:10;top:10;left:0' title='得票数:1 比例:6.67%'

  href=[url=http://www.upschool.com.cn]http://www.upschool.com.cn'[/url]

CoordSize='10,10' strokecolor='white' fillcolor='#ff99ff'><v:path v='m 300,200 ae

300,200,200,150,22020096,1572864 xe'/></v:shape>
</v:group>

<v:group style='width: 6cm; height: 6cm' coordorigin='0,0' coordsize='250,250'>
<v:rect style='height:10;width:15;top:0;left:10' fillcolor='#ffff33'/>
<v:rect style='height:28;width:100;top:0;left:30' stroked='false'><v:textbox

style='fontsize:2'>asp技术</v:textbox/></v:rect>
<v:rect style='height:10;width:15;top:30;left:10' fillcolor='#ff9933'/>
<v:rect style='height:28;width:100;top:30;left:30' stroked='false'><v:textbox

style='fontsize:2'>php</v:textbox/></v:rect>
<v:rect style='height:10;width:15;top:60;left:10' fillcolor='#3399ff'/>
<v:rect style='height:28;width:100;top:60;left:30' stroked='false'><v:textbox

style='fontsize:2'>jsp</v:textbox/></v:rect>
<v:rect style='height:10;width:15;top:90;left:10' fillcolor='#99ff33'/>
<v:rect style='height:28;width:100;top:90;left:30' stroked='false'><v:textbox

style='fontsize:2'>c#写的.netWEB程序</v:textbox/></v:rect>
<v:rect style='height:10;width:15;top:120;left:10' fillcolor='#ff6600'/>
<v:rect style='height:28;width:100;top:120;left:30' stroked='false'><v:textbox style='fontsize:2'>vb.net

写的.netWEB程序</v:textbox/></v:rect>
<v:rect style='height:10;width:15;top:150;left:10' fillcolor='#ff99ff'/>
<v:rect style='height:28;width:100;top:150;left:30' stroked='false'><v:textbox style='fontsize:2'>xml技术

</v:textbox/></v:rect>
</v:group>

<div style="position: absolute; left: 10; top: 10; width: 760; height:16">
<table border="1" cellpadding="2" cellspacing="2" cellpadding="0" cellspacing="0"

style="border-collapse: collapse" bordercolor="#CCCCCC" width="100%" ID="Table1">
  <tr>
<td width="100%" id=div1>　</td>
  </tr>
</table>
</div>//