1.文本框只能输入数字
<input name="test" value="" onKeypress="CheckInt()" style="ime-mode:disabled" οnpaste="return false;"><script language="JavaScript"> function CheckInt(){ if (!(((event.keyCode >= 48) && (event.keyCode <= 57)) || (event.keyCode == 45))){ event.keyCode = 0 ; } }</script>
2.光标总停留在文本框的末尾
<input type='text' name='text1' value='这里是' οnfοcus='fcs()'><script language="javascript"> function fcs(){ obj = event.srcElement; Rng = obj.createTextRange(); Rng.moveStart("character",obj.value.length); Rng.collapse(true); Rng.select(); }</script>
3.取自定义标签内的文本
<?xml version="1.0" encoding="gb2312" standalone="yes"?><html xmlns:my="html"><head><script>function getElement(){ obj = document.getElementById('tag'); alert(obj.childNodes[0].nodeValue);}</script></head><body><my:tag id='tag'>Hello JavaScript</my:tag><br/><button οnclick='getElement()'>test</button></body></html>
4.一个右键菜单控件
<OBJECT id=menu type="application/x-oleobject" classid="clsid:adb880a6-d8ff-11cf-9377-00aa003b7a11"> <PARAM name="Command" value="Related Topics,menu"> <PARAM name="Item1" value=";http://www.csdn.net"><PARAM name="Item2" value="搜狐;http://www.sohu.com"> <PARAM name="Item3" value="新浪;http://www.sina.com"> <PARAM name="Item4" value="网易;http://www.163.com"></OBJECT> <script> if (document.all) document.body.οnmοusedοwn=new Function("if (event.button==2) menu.Click();") </script>
5.用层模拟select边框
<span style="border:1px solid #7FFF00; position:absolute; overflow:hidden"> <select style="margin:-1px"> <option>aaa</option> <option>bbb</option> <option>ccc</option> </select></span>
6.常用正则:
reg = /^(/w)*$/g; //只可输入半角字符(字母,数字)
reg = /^[/w-]+(/.[/w-]+)*@[/w-]+(/.[/w-]+)+$/ //Email验证
reg = /^13+[0-9]{9}$/; //手机号码验证
reg = /[/u4E00-/u9FA5]/gi; //判断字符串是否包含中文
reg = /(^/s*)|(/s*$)/g; //字符串两端去空格
7.判断iframe是否已完全下载:
<iframe id="theframe" src="http://www.baidu.com" onreadystatechange="test_load()" width="100%" height="100%"></iframe><script>function test_load(){ if (document.all.theframe.readyState=="complete") alert("iframe已经下载完毕...");}</script>
8. 返回本地时间,精确到毫秒function GetTime(){ var n, now_time=''; n = new Date(); now_time += n.getYear(); now_time += '年'+(n.getMonth()+1); now_time += '月'+n.getDate(); now_time += '日'+n.getHours(); now_time += '时'+n.getMinutes(); now_time += '分'+n.getSeconds(); now_time += '秒'+n.getMilliseconds(); now_time += '微秒'; return( now_time );}
9.格式化日期(转)
Date.prototype.Format = function(format){ var o = { "M+" : this.getMonth()+1, //month "d+" : this.getDate(), //day "h+" : this.getHours(), //hour "m+" : this.getMinutes(), //minute "s+" : this.getSeconds(), //second "q+" : Math.floor((this.getMonth()+3)/3), //quarter "S" : this.getMilliseconds() //millisecond } if(/(y+)/.test(format)) format = format.replace(RegExp.$1, (this.getFullYear()+"").substr(4 - RegExp.$1.length)); for(var k in o) if(new RegExp("("+ k +")").test(format)) format = format.replace(RegExp.$1, RegExp.$1.length==1 ? o[k] : ("00"+ o[k]).substr((""+ o[k]).length)); return format;};
10. $函数 function $() { var elements = new Array();
for (var i = 0; i < arguments.length; i++) { var element = arguments[i]; if (typeof element == 'string') element = document.getElementById(element);
if (arguments.length == 1) return element;
elements.push(element); }
return elements; }
11. 当鼠标在热字上时就显示层 当鼠标移开时就隐藏 <Script language="javascript"> function showdiv(divname,divstatus) { if (divstatus ==1) { divname.style.display = "block"; } else { divname.style.display = "none"; } } </Script> <body> <a href="#" onMouseOver = "javascript:showdiv(stefli_1,1);" onMouseOut =
"javascript:showdiv(stefli_1,0);"> 鼠标移动到上面就显示，离开就隐藏 </a> <div id="stefli_1" style="display:none;"> 鼠标移动到上面就显示，离开就隐藏</div> <br> <br> <br> <a href="#" onclick = "javascript:showdiv(stefli_2,1);"> 鼠标单击就显示，离开不隐藏 </a> <div id="stefli_2" style="display:none;">鼠标单击就显示，离开不隐藏</div> </body>
12.单击显示/再单击隐藏层
<div id="mylayer"
style="position:absolute;visibility:hidden;width:100px;height:100px;top:100px;left:100px;bor
der:1px #000000 solid">这是个层</div><script type="text/javascript">function showlayer() { if (mylayer.style.visibility=="hidden") mylayer.style.visibility="visible"; else mylayer.style.visibility="hidden";}</script><a href="javascript:showlayer()">显示或关闭层</a>
13.<script>
var formFlag = 1;function changeTab1(){tab1.style.display="block";tab2.style.display="none";formFlag = 1;}function changeTab2(){tab2.style.display="";tab1.style.display="none";formFlag = 2;}</script>
