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JS代碼判斷集錦大全第4/5頁

更新時(shí)間：2007年12月06日 21:15:02 投稿：mdxy-dxy

本文通過實(shí)例代碼給大家介紹了js代碼判斷的方法，代碼簡(jiǎn)單易懂，非常不錯(cuò)，具有一定的參考借鑒價(jià)值，需要的朋友參考下吧

廣告JS代碼效果大全 1.[普通效果] 現(xiàn)在很多網(wǎng)站廣告做的如火如荼，現(xiàn)在我就來介紹一下常見的對(duì)聯(lián)浮動(dòng)廣告效果的代碼使用方法，介紹的這種效果，在1024*768分辨率下正常顯示，在800*600的分辨率下可以自動(dòng)隱藏，以免遮住頁面影響訪問者瀏覽內(nèi)容，下面就是實(shí)現(xiàn)效果所需代碼： var delta=0.015 var collection; function floaters() { this.items = []; this.addItem = function(id,x,y,content) { document.write('<DIV id='+id+' style="Z-INDEX: 0; 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()',10); } } function play() { if(screen.width<=800) { 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 = ''; } } var theFloaters = new floaters(); theFloaters.addItem('followDiv1','document.body.clientWidth-100',0,'</a><br><a href=廣告鏈接地址 target=_blank><img src=廣告圖片地址 width=100 height=400 border=0></a>' target=_blank); theFloaters.addItem('followDiv2',0,0,'<br><a href=廣告鏈接地址 target=_blank><img src=廣告圖片地址 width=100 height=400 border=0></a>' target=_blank); theFloaters.play(); 把上面的代碼另存為一個(gè)JS文件，然后在想實(shí)現(xiàn)此效果的頁面用調(diào)用即可！注意修改廣告圖片地址和連接地址！廣告JS代碼效果大全 ~~~~~~~~~~ 2.[鼠標(biāo)感應(yīng)] 與前面一個(gè)代碼不同的是，當(dāng)鼠標(biāo)移動(dòng)到廣告圖片上是可以感應(yīng)顯示另外設(shè)置好的廣告大圖效果，下面就是實(shí)現(xiàn)效果所需代碼： 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.[允許關(guān)閉] 與前面兩個(gè)代碼不同的是，廣告圖下方增加了一個(gè)圖片按紐，允許訪客點(diǎn)擊關(guān)閉廣告圖片，下面文本框中就是實(shí)現(xiàn)效果所需代碼： 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(); 把上面的代碼分別另存為兩個(gè)JS文件，然后在想實(shí)現(xiàn)此效果的頁面用 <script type="text/javascript" language="javascript1.2" src="*.js"></SCRIPT> 調(diào)用即可，*代表你另存的文件名！注意修改廣告圖片地址和連接地址！

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