实用JS大全
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（一）常用元素，对象，事件，技巧
- 事件源对象
event.srcElement.tagName
event.srcElement.type - 捕获释放
event.srcElement.setCapture();
event.srcElement.releaseCapture(); - 事件按键
event.keyCode
event.shiftKey
event.altKey
event.ctrlKey - 事件返回值
event.returnValue - 鼠标位置
event.x
event.y - 窗体活动元素
document.activeElement - 绑定事件
document.captureEvents(Event.KEYDOWN); - 访问窗体元素
document.all("txt").focus();
document.all("txt").select(); - 窗体命令
document.execCommand - 窗体COOKIE
document.cookie - 菜单事件
document.oncontextmenu - 创建元素
document.createElement("SPAN"); - 根据鼠标获得元素：
document.elementFromPoint(event.x,event.y).tagName=="TD
document.elementFromPoint(event.x,event.y).appendChild(ms) - 窗体图片
document.images[索引] - 窗体事件绑定
document.onmousedown=scrollwindow; - 元素
document.窗体.elements[索引] - 对象绑定事件
document.all.xxx.detachEvent('onclick',a); - 插件数目
navigator.plugins - 取变量类型
typeof($js_libpath) == "undefined" - 下拉框
下拉框.options[索引]
下拉框.options.length - 查找对象
document.getElementsByName("r1");
document.getElementById(id); - 定时
timer=setInterval('scrollwindow()',delay);
clearInterval(timer); - UNCODE编码
escape() ,unescape - 父对象
obj.parentElement(dhtml)
obj.parentNode(dom) - 交换表的行
TableID.moveRow(2,1) - 替换CSS
document.all.csss.href = "a.css"; - 并排显示
display:inline - 隐藏焦点
hidefocus=true - 根据宽度换行
style="word-break:break-all" - 自动刷新
<meta HTTP-EQUIV="refresh" C> - 简单邮件
<a href="[email=aaa@bbb.com?subject=ccc&body=xxxyyy]mailto:aaa@bbb.com?subject=ccc&body=xxxyyy[/email]"> - 快速转到位置
obj.scrollIntoView(true) - 锚
<a name="first">
<a href="#first">anchors</a> - 网页传递参数
location.search(); - 可编辑
obj.contenteditable=true - 执行菜单命令
obj.execCommand - 双字节字符
/[^/x00-/xff]/
汉字
/[/u4e00-/u9fa5]/ - 让英文字符串超出表格宽度自动换行
word-wrap: break-word; word-break: break-all; - 透明背景
<IFRAME src="1.htm" width=300 height=180 allowtransparency></iframe> - 获得style内容
obj.style.cssText - HTML标签
document.documentElement.innerHTML - 第一个style标签
document.styleSheets[0] - style标签里的第一个样式
document.styleSheets[0].rules[0] - 防止点击空链接时，页面往往重置到页首端。
<a href="javascript:function()">word</a> - 上一网页源
asp:
request.servervariables("HTTP_REFERER")
javascript:
document.referrer - 释放内存
CollectGarbage(); - 禁止右键
document.oncontextmenu = function() { return false;} - 禁止保存
<noscript><iframe src="*.htm"></iframe></noscript> - 禁止选取<body Shortcut Icon" href="favicon.ico">
favicon.ico 名字最好不变16*16的16色,放虚拟目录根目录下 - 收藏栏图标
<link rel="Bookmark" href="favicon.ico"> - 查看源码
<input type=button value=查看网页源代码 > - 关闭输入法
<input style="ime-mode:disabled"> - 自动全选
<input type=text name=text1 value="123" > - ENTER键可以让光标移到下一个输入框
<input > - 文本框的默认值
<input type=text value="123" > - title换行
obj.title = "123 sdfs " - 获得时间所代表的微秒
var n1 = new Date("2004-10-10".replace(/-/g, "//")).getTime() 窗口是否关闭
win.closed- checkbox扁平
<input type=checkbox style="position: absolute; clip:rect(5px 15px 15px 5px)"><br> - 获取选中内容
document.selection.createRange().duplicate().text - 自动完成功能
<input type=text autocomplete=on>打开该功能
<input type=text autocomplete=off>关闭该功能 - 窗口最大化
<body > - 无关闭按钮IE window.open("aa.htm", "meizz", "fullscreen=7");
- 统一编码/解码 alert(decodeURIComponent(encodeURIComponent("http://你好.com?as= hehe")))
encodeURIComponent对":"、"/"、";" 和 "?"也编码
- ></a>' target=_blank);
theFloaters.play(); - 广告JS代码效果大全 ~~~~~~~~~~
2.[鼠标感应]
与前面一个代码不同的是，当鼠标移动到广告图片上是可以感应显示另外设置好的广告大图效果，下面就是实现效果所需代码：function bigshow(){
document.all.div_250.style.visibility = 'visible';
document.all.div_80.style.visibility = 'hidden';
}
function bighide(){
document.all.div_80.style.visibility = 'visible';
document.all.div_250.style.visibility = 'hidden';
}
var ad_80= new Array(1);
var ad_250= new Array(1);
ad_80[0]="<a href=http://www.dfeng.net target=_blank><img src=/skin/adv43/ad/ad_ad.gif border=0></a>";
ad_250[0]="<a href=http://www.dfeng.net target=_blank><img src=/skin/adv43/ad/ad_ad2.gif border=0></a>";
var imgheight;
var fubioleft;
window.screen.width>800 ? fubioleft=15:fubioleft=15
document.write('<DIV id=floater_left style="Z-INDEX: 25; LEFT:'+fubioleft+'px; WIDTH: 28px;POSITION: absolute; TOP: 42px; HEIGHT: 22px">');
ad_now = new Date();
ad_id= ad_now.getSeconds() %1
var adhead1="<div id=div_80 style='position:absolute; width:95px; height:62px; z-index:12' onMouseOver=bigshow();>";
var adhead2="</div><div id=div_250 style='position:absolute; visibility: hidden; z-index:13;width: 80; height: 60' onMouseOut=bighide();>";
//var adhead1="<div id=div_80 style='position:absolute; width:95px; height:62px; z-index:20' onMouseOut='//MM_showHideLayers(/"div_250/",/"/",/"hide/")' onMouseOver='MM_showHideLayers(/"div_250/",/"/",/"show/")'>";
//var adhead2="</div><div id=div_250 style='position:absolute; z-index:21;visibility: hidden; width: 80; height: 60' onMouseOver='MM_showHideLayers(/"div_250/",/"/",/"show/")' onMouseOut='MM_showHideLayers(/"div_250/",/"/",/"hide/")'>";
document.write(adhead1+ad_80[ad_id]+adhead2+ad_250[ad_id]+"</div>");
document.write ("</div>");
self.onError=null;
currentX = currentY = 0;
whichIt = null;
lastScrollX = 0; lastScrollY = 0;
NS = (document.layers) ? 1 : 0;
IE = (document.all) ? 1: 0;
function heartBeat() {
if(IE) {
diffY = document.body.scrollTop;
diffX = document.body.scrollLeft; }
if(NS) {
diffY = self.pageYOffset; diffX = self.pageXOffset; }
if(diffY != lastScrollY) {
percent = .5 * (diffY - lastScrollY);
if(percent > 0) percent = Math.ceil(percent);
else percent = Math.floor(percent);
if(IE) document.all.floater_left.style.pixelTop += percent;
if(NS) document.floater_left.top += percent;
lastScrollY = lastScrollY + percent;
}
if(diffX != lastScrollX) {
percent = .5 * (diffX - lastScrollX);
if(percent > 0) percent = Math.ceil(percent);
else percent = Math.floor(percent);
if(IE) document.all.floater_left.style.pixelLeft += percent;
if(NS) document.floater_left.left += percent;
lastScrollX = lastScrollX + percent;
}
}
if(NS || IE) action = window.setInterval("heartBeat()",1);var ad_80= new Array(1);
var ad_250= new Array(1);
ad_80[0]="<a href=http://www.dfeng.net target=_blank><img src=/skin/adv43/ad/ad_ad.jpg border=0></a>";
ad_250[0]="<a href=http://www.dfeng.net target=_blank><img src=/skin/adv43/ad/ad_ad.jpg border=0></a>";
var imgheight;
var fubioleft;
window.screen.width>800 ? fubioleft=15:fubioleft=15
document.write('<DIV id=floater_right style="Z-INDEX: 25; LEFT:'+fubioleft+'px; WIDTH: 28px;POSITION: absolute; TOP: 42px; HEIGHT: 22px">');
ad_now = new Date();
ad_id= ad_now.getSeconds() %1
function myload()
{
if (navigator.appName == "Netscape")
{
document.div_right_80.pageX=+window.innerWidth-130;
document.div_right_250.pageX=+window.innerWidth-300;
mymove();
}
else
{
div_right_80.style.left=document.body.offsetWidth-130;
div_right_250.style.left=document.body.offsetWidth-300;
mymove();
}
}
function mymove()
{
if(document.ns)
{
document.div_right_80.left=pageXOffset+window.innerWidth-130;
document.div_right_250.left=pageXOffset+window.innerWidth-300;
setTimeout("mymove();",20)
}
else
{
div_right_80.style.left=document.body.scrollLeft+document.body.offsetWidth-145;
div_right_250.style.left=document.body.scrollLeft+document.body.offsetWidth-300;
setTimeout("mymove();",20)
}
}
var adhead1="<div id=div_right_80 style='position:absolute; width:95px; height:60px; z-index:12' onMouseOver=bigshow_right();>";
var adhead2="</div><div id=div_right_250 style='position:absolute; visibility: hidden; z-index:13;width: 250; height: 250' onMouseOut=bighide_right();><div align=right>";
document.write(adhead1+ad_80[ad_id]+adhead2+ad_250[ad_id]+"</div></div>");
myload()
document.write ("</div>");
self.onError=null;
currentX_right = currentY_right = 0;
whichIt_right = null;
lastScrollX_right = 0; lastScrollY_right = 0;
NS = (document.layers) ? 1 : 0;
IE = (document.all) ? 1: 0;
function heartBeat_right() {
if(IE) {
diffY_right = document.body.scrollTop;
diffX_right = document.body.scrollLeft; }
if(NS) {
diffY_right = self.pageYOffset; diffX_right = self.pageXOffset; }
if(diffY_right != lastScrollY_right) {
percent_right = .5 * (diffY_right - lastScrollY_right);
if(percent_right > 0) percent_right = Math.ceil(percent_right);
else percent_right = Math.floor(percent_right);
if(IE) document.all.floater_right.style.pixelTop += percent_right;
if(NS) document.floater_right.top += percent_right;
lastScrollY_right = lastScrollY_right + percent_right;
}
if(diffX_right != lastScrollX_right) {
percent_right = .5 * (diffX_right - lastScrollX_right);
if(percent_right > 0) percent_right = Math.ceil(percent_right);
else percent_right = Math.floor(percent_right);
if(IE) document.all.floater_right.style.pixelLeft += percent_right;
if(NS) document.floater_right.left += percent_right;
lastScrollX_right = lastScrollX_right + percent_right;
}
}
if(NS || IE) action = window.setInterval("heartBeat_right()",1);
function bigshow_right(){
document.all.div_right_250.style.visibility = 'visible';
document.all.div_right_80.style.visibility = 'hidden';
}
function bighide_right(){
document.all.div_right_80.style.visibility = 'visible';
document.all.div_right_250.style.visibility = 'hidden';
}document.write('');
document.write('');
document.write('');3.[允许关闭]
与前面两个代码不同的是，广告图下方增加了一个图片按纽，允许访客点击关闭广告图片，下面文本框中就是实现效果所需代码：var delta=0.015;
var collection;
var closeB=false;
function floaters() {
this.items = [];
this.addItem = function(id,x,y,content)
{
document.write('<DIV id='+id+' style="Z-INDEX: 10; POSITION: absolute; width:80px; height:60px;left:'+(typeof(x)=='string'?eval(x):x)+';top:'+(typeof(y)=='string'?eval(y):y)+'">'+content+'</DIV>');
var newItem = {};
newItem.object = document.getElementById(id);
newItem.x = x;
newItem.y = y;
this.items[this.items.length] = newItem;
}
this.play = function()
{
collection = this.items
setInterval('play()',30);
}
}
function play()
{
if(screen.width<=800 || closeB)
{
for(var i=0;i<collection.length;i++)
{
collection.object.style.display = 'none';
}
return;
}
for(var i=0;i<collection.length;i++)
{
var followObj = collection.object;
var followObj_x = (typeof(collection.x)=='string'?eval(collection.x):collection.x);
var followObj_y = (typeof(collection.y)=='string'?eval(collection.y):collection.y);
if(followObj.offsetLeft!=(document.body.scrollLeft+followObj_x)) {
var dx=(document.body.scrollLeft+followObj_x-followObj.offsetLeft)*delta;
dx=(dx>0?1:-1)*Math.ceil(Math.abs(dx));
followObj.style.left=followObj.offsetLeft+dx;
}
if(followObj.offsetTop!=(document.body.scrollTop+followObj_y)) {
var dy=(document.body.scrollTop+followObj_y-followObj.offsetTop)*delta;
dy=(dy>0?1:-1)*Math.ceil(Math.abs(dy));
followObj.style.top=followObj.offsetTop+dy;
}
followObj.style.display = '';
}
}
function closeBanner()
{
closeB=true;
return;
}
var theFloaters = new floaters();
//
theFloaters.addItem('followDiv1','document.body.clientWidth-100',0,'<a href=http://www.dfeng.net target=_blank><img src=ad/doublead/right.gif width=100 height=554 border=0></a><br><br><img src=ad/doublead/close.gif >');
theFloaters.addItem('followDiv2',0,0,'<a href=http://www.dfeng.net target=_blank><img src=ad/doublead/ad_ad.gif width=100 height=400 border=0 ></a><br><br><img src=ad/doublead/close.gif >');
theFloaters.play();把上面的代码分别另存为两个JS文件，然后在想实现此效果的页面用
<script type="text/javascript" language="javascript1.2" src="*.js"></SCRIPT>
调用即可，*代表你另存的文件名！注意修改广告图片地址和连接地址！ - 广告JS代码效果大全 ~~~~~~~~~~
4.[浮动对联广告---之左侧代码]
如果您想只有一侧显示的话,下面是实现左侧效果所需代码：var ad_float_left_src ="图片地址";
var ad_float_left_url ="地址";
var ad_float_left_type = "";
document.ns = navigator.appName == "Microsoft Internet Explorer"
var imgheight_close
var imgleft
window.screen.width>800 ? imgheight_close=120:imgheight_close=120
window.screen.width>800 ? imgleft=8:imgleft=122
function myload()
{
myleft.style.top=document.body.scrollTop+document.body.offsetHeigh
t-imgheight_close;
myleft.style.left=imgleft;
leftmove();
}
function leftmove()
{
myleft.style.top=document.body.scrollTop+document.body.offsetHeigh
t-imgheight_close;
myleft.style.left=imgleft;
setTimeout("leftmove();",50)
}
function MM_reloadPage(init) { //reloads the window if Nav4
resized
if (init==true) with (navigator) {if ((appName=="Netscape")&&
(parseInt(appVersion)==4)) {
document.MM_pgW=innerWidth; document.MM_pgH=innerHeight;
onresize=MM_reloadPage; }}
else if (innerWidth!=document.MM_pgW || innerHeight!
=document.MM_pgH) location.reload();
}
MM_reloadPage(true)
function close_float_left(){
myleft.style.visibility='hidden';
}
document.write("<div id=myleft style='position:
absolute;width:80;top:300;left:5;visibility: visible;z-index: 1'>"
+"<style>"
+"A.closefloat:link,A.refloat:visited {text-
decoration:none;color:#000000;font-size:12px}"
+"A.closefloat:active,A.refloat:hover {text-decoration:underline;color:#0000FF;font-size:12px}"
+"</style>"
+"<table border=0 cellpadding=0 cellspacing=0><tr><td>");
if(document.ns){
if(ad_float_left_type!="swf")
document.write("<a href='" + ad_float_left_url + "' target
= '_blank'><img src='" + ad_float_left_src + "' WIDTH=88
height=31 border=0></a>");
else
document.write("<EMBED src='" + ad_float_left_src + "'
quality=high WIDTH=80 HEIGHT=80 TYPE='application/x-shockwave-
flash' id=changhongout ></EMBED>");
document.write("</td></tr><tr><td width=80 height=20
align=right><a href='javascript:close_float_left( target=_blank);void(0);'
class="closefloat"><b><font color=#ff0000>关闭</font></b></a></td></tr>"
+"</table>"
+"</div>");
myload()}[ 5.背投广告]
<script language="javascript">
<!--
var sohu=window.open('http://www.sohu.com');
var ads=window.open('about:blank','ads','width=700,height=400');
sohu.focus();
ads.document.open();
ads.document.write ("<html><head><title>ads</title></head><body>This is background ads</body></html>");
ads.document.close();
//-->
</script>[ 6.收缩广告]
<script language="javascript">
<!--
var bwidth=800;
var bheight=400;
function go() {
bwidth = bwidth - 10;
bheight = bheight - 5;
if(bwidth <= 10)
{ ads.style.display='none';clearTimeout("my"); }
else
{ ads.outerHTML='<span id="ads" style="width:'+bwidth+'px;height:'+bheight+'px;background-color:#0099FF;"></span>';}
var my=setTimeout("go()",50);
}
setTimeout("go()",6000);
//-->
</script>
<body topmargin="0" leftmargin="0">
<div align="center"><span id="ads" style="width:800px;height:400px;background-color:#0099FF"></span></div>
</body>******************************************************************************
把上面的代码另存为三个*.JS文件，然后在想实现此效果的页面用
CODE:
<script src="*.js"></SCRIPT>
调用即可，*代表你另存的文件名！注意修改广告图片地址和连接地址！相应的参数可以根据页面自行调整 - js幻灯片播放器~~~~~~~~~~
var _c = 0;
var _i = 0;
var _v = 0;
var _l = 0;
var _sf = 3000;
var _html = null;
var _image = null;
var _mycars= new Array();
var _w = new Array();
var _h = new Array();function adRotator() {}
function adRotator.add(p,w,h)
{
_mycars[_c] = p;
_w[_c] = w;
_h[_c] = h;
_c = _c + 1;
}/* 播放设置 */
function adRotator.loads()
{
if (_i < _mycars.length && _l < 1)
{
_html = '<img src="' + _mycars[_i] + '" width="' + _w[_i] + '" height="' + _h[_i] + '" style="border:1px solid #CCCCCC;">'
if (_v < 1)
{
document.getElementById('image').value = _html + ',' + _i;
document.getElementById('rotatorPlayer').innerHTML = _html;
_i = _i + 1;
document.getElementById('backs').disabled='';
window.setTimeout("adRotator.loads("+_i+")",_sf);
}
}
else
{
_html = '<img src="' + _mycars[_i] + '" width="' + _w[_i] + '" height="' + _h[_i] + '" style="border:1px solid #CCCCCC;">'
document.getElementById('image').value = _html + ',' + _i;
document.getElementById('rotatorPlayer').innerHTML = _html;
}
if (_i+1 > _mycars.length)
{
document.getElementById('stops').disabled='True';
document.getElementById('play').disabled='';
document.getElementById('backs').disabled='';
document.getElementById('next').disabled='True';
_i = 0;
_v = 1;
}
}/* 播放 */
function adRotator.play()
{
_v = 0;
_l = 0;
adRotator.loads();
}/* 下一张 */
function adRotator.next()
{
_l = 1;
if(_i+1 < _mycars.length)
{
_i = _i + 1;
document.getElementById('play').disabled='';
document.getElementById('stops').disabled='True';
document.getElementById('backs').disabled='';
adRotator.loads();
}
else
{
document.getElementById('next').disabled='True';
}
}/* 上一张 */
function adRotator.backs()
{
_l = 1;
if(_i-1 < 0)
{
document.getElementById('backs').disabled='True';
}
else
{
_i = _i - 1;
document.getElementById('play').disabled='';
document.getElementById('stops').disabled='True';
document.getElementById('next').disabled='';
adRotator.loads();
}
}/* 间隔时间 */
function adRotator.set()
{
var _sfc = document.getElementById('second').value;
if (isInteger(_sfc))
{
_sf = _sfc * 1000;
}
else
{
alert('提示：只能输入数字！');
document.getElementById('second').value=1;
document.getElementById('second').select();
}
}/* 字符检测 */
function isInteger(str)
{
var regu = /^[-]{0,1}[0-9]{1,}$/;
return regu.test(str);
}/* 暂停 */
function adRotator.stops()
{
_v = 1;
}/* 添加图片,还要加的话注意图片名字就好了,后面400,300是大小 */
adRotator.add("1.jpg",400,300);
adRotator.add("2.jpg",400,300);
adRotator.add("3.jpg",400,300);把以上文件存为一个JS文件
在下面文件中引用即可
<style type="text/css">
<!--
body { font-size:12px;
}
input {
border-right: #7b9ebd 1px solid;
padding-right: 2px;
border-top: #7b9ebd 1px solid;
padding-left: 2px;
font-size: 12px;
filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#cecfde);
border-left: #7b9ebd 1px solid;
cursor: hand;
color: black;
padding-top: 2px;
border-bottom: #7b9ebd 1px solid;
}
button {
border-right: #7b9ebd 1px solid;
padding-right: 2px;
border-top: #7b9ebd 1px solid;
padding-left: 2px;
font-size: 12px;
filter: progid:DXImageTransform.Microsoft.Gradient(GradientType=0, StartColorStr=#ffffff, EndColorStr=#cecfde);
border-left: #7b9ebd 1px solid;
cursor: hand;
color: black;
padding-top: 2px;
border-bottom: #7b9ebd 1px solid;
}
-->
</style>
<script language="javascript" src="test.js">
</script><body >
<div id="rotatorPlayer"></div><input type="button" name="play" value="开始播放" disabled="True"/>
<input type="button" name="stops" value="暂停" />
<input type="button" name="backs" value="上一张" disabled="true"/>
<input type="button" name="next" value="下一张" />
<input type="text" id="second" value="3" size="3" maxlength="2">
秒
<input type="button" value="设置时间" /><input name="image" type="text" size="65"/>
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