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常用JavaScript

 
阅读更多

以下整理的JavaScript常用的脚本，有需要的朋友可以收藏了喔~

1.让文字不停地滚动

<MARQUEE>滚动文字</MARQUEE>

2.记录并显示网页的最后修改时间 

<script language=javascript>
document.write("最后更新时间: " + document.lastModified + "");
</script>

3.关闭当前窗口

<a href="#" onClick="javascript ：window.close();return false;">关闭窗口</a>

4.5秒后关闭当前页

<script language="javascript"> 
<!-- 
setTimeout('window.close();',5000); 
--> 
</script>

5.2秒后载入指定网页 

<head>
<meta http-equiv="refresh" content="2;URL=http://你的网址">
</head>

6.添加到收藏夹

<Script Language="javascript"> 
function bookmarkit(){
window.external.addFavorite('http://你的网址','你的网站名称');
} 
if (document.all){
document.write('<a href="#" onClick="bookmarkit()">加入收藏夹</a>'); 
}
</Script>

7.让超链接不显示下划线

<style type="text/css">
<!- a:link{text-decoration:none} 
a:hover{text-decoration:none} 
a:visited{text-decoration:none} 
-> 
</style>

8.禁止鼠标右键的动作

<script language="javascript"> 
function click() { 
if (event.button==2||event.button==3){ 
alert('禁止鼠标右键'); 
}
} 
document.onmousedown=click; 
</script>

9.设置该页为首页 

<span onclick="var strHref=window.location.href;this.style.behavior=
'url(#default#homepage)';
this.setHomePage('http://www.cnblogs.com/xiaoyu5062/');
" style="CURSOR: hand"><br>将本站设置为首页</span>

10.节日倒计时 

<Script Language="javascript"> 
var timedate= new Date("December 25,2008"); 
var times="圣诞节"; 
var now = new Date(); 
var date = timedate.getTime() - now.getTime(); 
var time = Math.floor(date / (1000 * 60 * 60 * 24)); 
if (time >= 0) 
document.write("现在离"+times+"还有: "+time +"天")
</Script>

11.单击按钮打印出当前页

<Script Language="javascript"> 
if (window.print) { 
document.write('<form>' + '<input type=button name=print value="打印本页" ' + 'onClick="javascript:window.print();"></form>'); 
} 
</Script>

12.单击按钮‘另存为’当前页 

<input type="button" name="Button" value="保存本页" onClick="document.all.button.ExecWB(4,1)"> 
<object id="button" width=0 height=0 classid="CLSID:8856F961-340A-11D0-A96B-00C04FD705A2"> 
<embed width="0" height="0"></embed> 
</object>

13.显示系统当前日期 

View Code 
<script language=javascript> 
var today=new Date(); 
function myDate(){ 
this.week=new Array();
this.week[0]="星期日";
this.week[1]="星期一";
this.week[2]="星期二";
this.week[3]="星期三";
this.week[4]="星期四";
this.week[5]="星期五";
this.week[6]="星期六";

this.getWeek=function(num){
return this.week[num];
} 
} 
var d = new myDate();

document.write( "<font color=##000000 style='font-size:9pt;font-family: 宋体'> ", today.getYear(),"年",today.getMonth()+1,"月",today.getDate(),"日", d.getWeek(today.getDay()),"</font>" ); 
</script>

14.不同时间段显示不同问候语

View Code 
<Script Language="javascript"> 
<!-- 
var text=""; 
day = new Date( ); 
time = day.getHours( ); 
if (( time>=0) && (time < 7 )){
text="夜猫子，要注意身体哦！ "
} 
if (( time >= 7 ) && (time < 12)){
text="今天天气……哈哈哈，不去玩吗？"
} 
if (( time >= 12) && (time < 14)){
text="午休时间哦，朋友一定是不习惯午睡的吧？！" 
}
if (( time >=14) && (time < 18)){
text="下午茶的时间到了，休息一下吧！ "
} 
if ((time >= 18) && (time <= 22)){
text="您又来了，可别和MM聊太久哦！" 
}
if ((time >= 22) && (time < 24)){
text="很晚了哦，注意休息呀！" 
}
document.write(text) 
//---> 
</Script>

15.水中倒影效果 

View Code 
<img id="reflect" src="你自己的图片文件名" width="175" height="59"> 
<script language="javascript"> 
function f1() { 
setInterval("mdiv.filters.wave.phase+=10",100); 
} 
if (document.all) { 
document.write('<img id=mdiv src="'+document.all.reflect.src+'" style="filter:wave(strength=3,freq=3,phase=0,lightstrength=30) blur() flipv()">');
window.onload=f1 
} 
</script>

16.慢慢变大的窗口 

View Code 
<Script Language="javascript"> 
<!-- 
var Windowsheight=100;
var Windowswidth=100; 
var numx=5; 
function openwindow(thelocation){ 
temploc=thelocation;
if (!(window.resizeTo&&document.all)&&!(window.resizeTo&&document.getElementById)) { 
window.open(thelocation);
return; 
} 
windowsize=window.open("","","scrollbars"); 
windowsize.moveTo(0,0); 
windowsize.resizeTo(100,100); 
tenumxt(); 
} 
function tenumxt(){ 
if (Windowsheight>=screen.availHeight-3){ 
numx=0;
} 
windowsize.resizeBy(5,numx); 
Windowsheight+=5; 
Windowswidth+=5; 
if (Windowswidth>=screen.width-5) { 
windowsize.location=temploc; 
Windowsheight=100; 
Windowswidth=100; 
numx=5; 
return; 
} 
setTimeout("tenumxt()",50); 
} 
//--> 
</script> 
<p><a href="javascript:openwindow('http://www.cnblogs.com/xiaoyu5062/')">进入</a>

17.改变IE地址栏的IE图标 

我们要先做一个16*16的icon（图标文件），保存为index.ico。把这个图标文件上传到根目录下,
并在首页<head></head>之间加上如下代码：

<head>
<link rel="Shortcut Icon" href="index.ico"/>
</head>

18：进入或者离开时显示信息

设置body的 onLoad和onUnload事件
19：只能输入数字

View Code 
<script LANGUAGE="javascript">; 
<!-- 
function check(){ 
if (document.form.tell.value==""){ 
alert("请输入数字！"); 
document.form.tell.focus(); 
return false; 
}else{ 
var Letters = "0123456789()+-"; 
for (i=0; i< document.form.tell.value.length; i++){ 
var CheckChar = document.form.tell.value.charAt(i); 
if (Letters.indexOf(CheckChar) == -1){ 
alert("输入的数字不正确！"); 
document.form.tell.focus(); 
return false; 
} 
} 
} 
} 
//-->; 
</script>
<form method="POST" name=form action="" onSubmit="return check();">
请输入数字：<input type="text" name="tell" size="20">
<input type="submit" value="提交" name="B1"> 
</form>

20：email 合法性检查 

View Code 
<script language="javascript">
function check() 
{ 
var vv = document.all("email").value;
if(vv.length!=0) 
{ 
if (vv.charAt(0)=="." || 
vv.charAt(0)=="@"|| 
vv.indexOf('@', 0) == -1 || 
vv.indexOf('.', 0) == -1 || 
vv.lastIndexOf("@") 
==vv.length-1 || 
vv.lastIndexOf(".") 
==vv.length-1) 
{ 
alert("Email的格式不正確！"); 
document.all("email").focus(); 
return false; 
} 
} 
else 
{ 
alert("Email的不能为空！"); 
document.all("email").focus(); 
return false; 
} 
return false; 
} 
</script>
<input type="text" name="email">
<input type="button" onclick="check();" value="检查email">

21：屏蔽 Ctrl+N、Shift+F10、F5刷新、退格键

View Code 
<script language="javascript">
<!--
//屏蔽鼠标右键、Ctrl+N、Shift+F10、F5刷新、退格键
function window.onhelp(){return false} //屏蔽F1帮助
function KeyDown(){
if ((window.event.altKey)&&
((window.event.keyCode==37)|| //屏蔽 Alt+ 方向键 ←
(window.event.keyCode==39))){ //屏蔽 Alt+ 方向键 →
alert("不准你使用ALT+方向键前进或后退网页！");
event.returnvalue=false;
}
/* 注：这还不是真正地屏蔽 Alt+ 方向键，
因为 Alt+ 方向键弹出警告框时，按住 Alt 键不放，
用鼠标点掉警告框，这种屏蔽方法就失效了。以后若
有哪位高手有真正屏蔽 Alt 键的方法，请告知。*/
if ((event.keyCode == 8) && 
(event.srcElement.type != "text" && 
event.srcElement.type != "textarea" && 
event.srcElement.type != "password") || //屏蔽退格删除键 
(event.keyCode==116)|| //屏蔽 F5 刷新键
(event.ctrlKey && event.keyCode==82)){ //Ctrl + R
event.keyCode=0;
event.returnvalue=false;
}
if ((event.ctrlKey)&&(event.keyCode==78)) //屏蔽 Ctrl+n
event.returnvalue=false;
if ((event.shiftKey)&&(event.keyCode==121)) //屏蔽 shift+F10
event.returnvalue=false;
if (window.event.srcElement.tagName == "A" && window.event.shiftKey) 
window.event.returnvalue = false; //屏蔽 shift 加鼠标左键新开一网页
if ((window.event.altKey)&&(window.event.keyCode==115)){ //屏蔽Alt+F4
window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");
return false;}
}
/* 另外可以用 window.open 的方法屏蔽 IE 的所有菜单
第一种方法：
window.open("你的.htm", "","toolbar=no,location=no,directories=no,menubar=no,scrollbars=no,resizable=yes,status=no,top=0,left=0")
第二种方法是打开一个全屏的页面：
window.open("你的.asp", "", "fullscreen=yes")
*/
//-->
</script>
<input type="text" >

22：屏蔽F5键

View Code 
<script language="javascript">
<!--
function document.onkeydown() 
{ 
if ( event.keyCode==116) 
{ 
event.keyCode = 0; 
event.cancelBubble = true; 
return false; 
}
}
-->
</script>
<input type="text">

23：屏蔽主窗口滚动条

在body标签里加上 

style="overflow-y:hidden"

24：取得控件的绝对位置

View Code 
<script language="javascript"> 
function getIE(e){ 
var t=e.offsetTop; 
var l=e.offsetLeft; 
while(e=e.offsetParent){ 
t+=e.offsetTop; 
l+=e.offsetLeft; 
} 
alert("top="+t+"nleft="+l); 
} 
</script> 
<input type="button" value="看看我的位置" onclick="getIE(this);">

25：切换页面后，光标停在文本框文字的最后

View Code 
<script language="javascript"> 
function cc() 
{ 
var e = event.srcElement; 
var r =e.createTextRange(); 
r.moveStart("character",e.value.length); 
r.collapse(true); 
r.select(); 
} 
</script> 
<input type=text name=text1 value="123" onfocus="cc();">

26：表格的半透明显示效果 

在<head></head>之间加上如下代码：

<style> 
.alpha{filter: Alpha(Opacity=50)} //50表示50%的透明度 
</style>

在<body></body>之间加上如下代码： 

View Code 
<table border="1" width="100" height="62" class="alpha" bgcolor="#F2A664" > 
<tr> 
<td width="100%" height="62"> 
<div align="center">很酷吧!</div> 
</td> 
</tr> 
</table>

27：细线分隔线

<hr noshade size=0 color=#C0C0C0>

28：过渡度方式

<head>
<meta http-equiv="Page-Exit" content="revealTrans(Duration=3,Transition=3)"> 
</head>
<a href="b.html">to b.html</a>

Duration的值为网页动态过渡的时间，单位为秒。 

Transition是过渡方式，它的值为0到23，分别对应24种过渡方式。如下表：
0 盒状收缩 1 盒状放射
2 圆形收缩 3 圆形放射
4 由下往上 5 由上往下
6 从左至右 7 从右至左
8 垂直百叶窗 9 水平百叶窗
10 水平格状百叶窗 11垂直格状百叶窗
12 随意溶解 13从左右两端向中间展开
14从中间向左右两端展开 15从上下两端向中间展开
16从中间向上下两端展开 17 从右上角向左下角展开
18 从右下角向左上角展开 19 从左上角向右下角展开
20 从左下角向右上角展开 21 水平线状展开
22 垂直线状展开 23 随机产生一种过渡方式

29：如何控制横向和纵向滚动条的显隐？

<body style="overflow-y:hidden"> <!--去掉x轴--> 
<body style="overflow-x:hidden"> <!--去掉y轴 --> 
<body scroll="no"><!--不显-->

30：javascript中获取地址栏参数比如 index.jsp?id=xxx&name=xxx

方法一：

View Code 
<script>
function getvalue(name)
{
var str=window.location.search;
if (str.indexOf(name)!=-1)
{
var pos_start=str.indexOf(name)+name.length+1;
var pos_end=str.indexOf("&",pos_start);
if (pos_end==-1)
{
return str.substring(pos_start);
}
else
{
return str.substring(pos_start,pos_end)
}
}
else
{
return "没有这个name值";
}
}
var strName=prompt("请输入您所要值的名字");
alert(getvalue(strName));
</script>

方法二：

View Code 
<script language="javascript">
var URLParams = new Array();
var aParams = document.location.search.substr(1).split('&');
for (i=0;i<aParams.length;i++){
var aParam = aParams[i].split("=");
URLParams[aParam[0]] = aParam[1];
}
//取得传过来的name参数
var v=URLParams["name"];
alert("name==="+v);
</script>

方法三：

View Code 
<script type="text/javascript">
Request = {
QueryString : function(item){
var svalue = location.search.match(new RegExp("[\?\&]" + item + "=([^\&]*)(\&?)","i"));
return svalue ? svalue[1] : svalue;
}
}
alert(Request.QueryString("name"));
</script>

31：window对象的方法

open(URL,WindowName,parameterList):open方法创建一个新的浏览器窗口，并在新窗口中载入一个指定的URL地址。
close():close方法关闭一个浏览器窗口.
alert(text):弹出一个信息框.
confirm(text):弹出一个确认框.
prompt(text,Defaulttext):弹出一个提示框.
setTimeout(expression,time):定时设置,在一定时间后自动执行expression描述的代码,使用time设置时间,单位是毫秒.
clearTimeout(timer):取消以前的定时设置.
back():指示浏览器载入历史记录中的上一个URL地址.
forward():指示浏览器载入历史记录中的下一个URL地址.
stop():指示浏览器停止网页的装载.
location:提供当前窗口的URL信息
history:提供当前窗口的历史记录,可以在网页导航中发挥作用.
closed:一个指出窗口目前是否关闭的逻辑值.
self:引用当前文档对应的窗口.
navigate(url):窗口转向另外一个窗口
32：验证是否整数

View Code 
<script type="text/javascript">
function checkInteger(v){
var s = ""+v;
var ret = s.match(/^(-|\+)?\d+$/);
if(ret==null){
alert(v+" , 不是数字");
}
}
checkInteger('01230');
checkInteger("abc");
</script>

33：验证是否都是数字，而且是正整数

View Code 
<script type="text/javascript">
function checkGreaterZero(v){
var s = ""+v;
var ret = s.match(/^\d+$/);
if(ret==null){
alert(v+" , 不是数字");
}
}
checkGreaterZero('1230');
checkGreaterZero("abc");
</script>

34：验证是否都是数字，而且是负整数

View Code 
<script type="text/javascript">
function checkLitterZero(v){
var s = ""+v;
var ret = s.match(/^-\d+$/);
if(ret==null){
alert(v+" , 不是小于0的数字");
}
}
checkLitterZero('-1230');
checkLitterZero("123");
</script>

35：短时间，形如 (13:04:06)

View Code 
<script language="javascript">
function isTime(str)
{
var a = str.match(/^(\d{1,2})(:)?(\d{1,2})\2(\d{1,2})$/);
if (a == null) {alert('输入的参数不是时间格式'); return false;}
if (a[1]>24 || a[3]>60 || a[4]>60)
{
alert(str+",时间格式不对");
return false
}
return true;
}

isTime("12:09:39");
isTime("33:55:99");
</script>

36:短日期，形如 (2008-12-05)

View Code 
<script language="javascript">
function strDateTime(str)
{
var r = str.match(/^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2})$/); 
if(r==null)return false; 
var d= new Date(r[1], r[3]-1, r[4]); 
return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]);
}

alert(strDateTime("2008-10-28"));
alert(strDateTime("08-12-9"));
</script>

37：长时间，形如 (2003-12-05 13:04:06)

View Code 
<script language="javascript">
function strDateTime(str)
{
var reg = /^(\d{1,4})(-|\/)(\d{1,2})\2(\d{1,2}) (\d{1,2}):(\d{1,2}):(\d{1,2})$/; 
var r = str.match(reg); 
if(r==null)return false; 
var d= new Date(r[1], r[3]-1,r[4],r[5],r[6],r[7]); 
return (d.getFullYear()==r[1]&&(d.getMonth()+1)==r[3]&&d.getDate()==r[4]&&d.getHours()==r[5]&&d.getMinutes()==r[6]&&d.getSeconds()==r[7]);
}
alert(strDateTime("2008-10-28 11:11:11"));
alert(strDateTime("08-12-9 11:11:11"));
</script>

38：检测值不能为空

View Code 
<script language="javascript">
function canNotEmpty(str)
{
if(str.replace(/^\s+|\s+$/g,'')==''){
alert('不能为空!');
} 
return true;
}
alert(canNotEmpty("2008-10-28 11:11:11"));
alert(canNotEmpty(" "));
</script>

39：判断字符全部由a-Z或者是A-Z的字字母组成

View Code 
<script language="javascript">
function isLetter(str)
{
if(/[^a-zA-Z]/g.test(str)){
return false;
}
return true;
}
alert(isLetter("aaaSSFsadfa"));
alert(isLetter("a3d"));
</script>

40：判断字符由字母和数字组成

View Code 
<script language="javascript">
function isLetter(str)
{
if(/[^0-9a-zA-Z]/g.test(this.value)){
return false;
}
return true;
}
alert(isLetter("aaaSSFsadfa"));
alert(isLetter("a3d"));
</script>

41：判断字符由字母和数字，下划线,点号组成.且开头的只能是下划线和字母

View Code 
<script language="javascript">
function isLetter(str)
{
if(/^([a-zA-z_]{1})([\w]*)$/g.test(str)){
return true;
}
return false;
}
alert(isLetter(" aaaSSFsadfa"));
alert(isLetter("_a3d"));
</script>

42：判断浏览器的类型

View Code 
<script language="javascript">
alert(window.navigator.appName);
</script>

43：判断ie的版本

View Code 
<script language="javascript">
alert(window.navigator.appVersion);
</script>

44：判断客户端的分辨率

View Code 
<script language="javascript">
alert(window.screen.height);
alert(window.screen.width);
</script>

45：用正则表达式判断是否Email

View Code 
<script language="javascript">
function isMail(mail)
{
return(new RegExp(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/).test(mail));
}
alert(isMail("cc@a.com"));
alert(isMail("cc 1@a.com"));
</script>

46：用正则表达式判断是否身份证号码

View Code 
<script language="javascript">
function isIdCardNo(num)
{
if (isNaN(num)) {alert("输入的不是数字！"); return false;}
var len = num.length, re; 
if (len == 15)
re = new RegExp(/^(\d{6})()?(\d{2})(\d{2})(\d{2})(\d{3})$/);
else if (len == 18)
re = new RegExp(/^(\d{6})()?(\d{4})(\d{2})(\d{2})(\d{3})(\d)$/);
else {alert("输入的数字位数不对！"); return false;}
var a = num.match(re);
if (a != null)
{
if (len==15)
{
var D = new Date("19"+a[3]+"/"+a[4]+"/"+a[5]);
var B = D.getYear()==a[3]&&(D.getMonth()+1)==a[4]&&D.getDate()==a[5];
}
else
{
var D = new Date(a[3]+"/"+a[4]+"/"+a[5]);
var B = D.getFullYear()==a[3]&&(D.getMonth()+1)==a[4]&&D.getDate()==a[5];
}
if (!B) {alert("输入的身份证号 "+ a[0] +" 里出生日期不对！"); return false;}
}
return true;
}
alert(isIdCardNo("511111199001013456"));
alert(isIdCardNo("511111199013313456"));
</script>

47：给表格自动增行（msdn的例子）

View Code 
<SCRIPT>
function createRows(){
// insert two rows.
var oRow1=oTable.insertRow(oTable.rows.length);
var oRow2=oTable.insertRow(oTable.rows.length);

// retrieve the rows collection for the table.
var aRows=oTable.rows;

// retrieve the cells collection for the first row.
var aCells=oRow1.cells;

// insert two cells into the first row.
var oCell1_1=aRows(oRow1.rowIndex).insertCell(aCells.length);
var oCell1_2=aRows(oRow1.rowIndex).insertCell(aCells.length);

// retrieve the cells collection for the second row.
aCells=oRow2.cells;

// insert two cells into the second row.
var oCell2_1=aRows(oRow2.rowIndex).insertCell(aCells.length);
var oCell2_2=aRows(oRow2.rowIndex).insertCell(aCells.length);

// Add regular HTML values to the 4 new cells. 
oCell1_1.innerHTML="<B>Cell 1.1!</B>";
oCell1_2.innerHTML="<B>Cell 1.2!</B>";
oCell2_1.innerHTML="<B>Cell 2.1!</B>";
oCell2_2.innerHTML="<B>Cell 2.2!</B>"; 
}
</SCRIPT>
<INPUT TYPE="button" VALUE="Create Rows" onclick="createRows()">
<TABLE BORDER=1 ID="oTable">
</TABLE>

48：严格的身份证验证

View Code 
<script>
var aCity={11:"北京",12:"天津",13:"河北",14:"山西",15:"内蒙古",21:"辽宁",22:"吉林",23:"黑龙江",31:"上海",32:"江苏",33:"浙江",34:"安徽",35:"福建",36:"江西",37:"山东",41:"河南",42:"湖北",43:"湖南",44:"广东",45:"广西",46:"海南",50:"重庆",51:"四川",52:"贵州",53:"云南",54:"xizang",61:"陕西",62:"甘肃",63:"青海",64:"宁夏",65:"新疆",71:"台湾",81:"香港",82:"澳门",91:"国外"}

function cidInfo(sId){
var iSum=0
var info=""
if(!/^\d{17}(\d|x)$/i.test(sId))return false;
sId=sId.replace(/x$/i,"a");
if(aCity[parseInt(sId.substr(0,2))]==null)return "Error:非法地区";
sBirthday=sId.substr(6,4)+"-"+Number(sId.substr(10,2))+"-"+Number(sId.substr(12,2));
var d=new Date(sBirthday.replace(/-/g,"/"))
if(sBirthday!=(d.getFullYear()+"-"+ (d.getMonth()+1) + "-" + d.getDate()))return "Error:非法生日";
for(var i = 17;i>=0;i --) iSum += (Math.pow(2,i) % 11) * parseInt(sId.charAt(17 - i),11)
if(iSum%11!=1)return "Error:非法证号";
return aCity[parseInt(sId.substr(0,2))]+","+sBirthday+","+(sId.substr(16,1)%2?"男":"女")
}
document.write(cidInfo("380524198002300016"),"<br/>");
document.write(cidInfo("340524198002300019"),"<br/>")
document.write(cidInfo("340524197711111111"),"<br/>")
document.write(cidInfo("34052419800101001x"),"<br/>");
</script>

49：验证IP地址

View Code 
<SCRIPT LANGUAGE="JavaScript">
function isip(s){
var check=function(v){try{return (v<=255 && v>=0)}catch(x){return false}};
var re=s.split(".")
return (re.length==4)?(check(re[0]) && check(re[1]) && check(re[2]) && check(re[3])):false
}
var s="202.197.78.129";
alert(isip(s))
</SCRIPT>

 

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