网页左上角导航，鼠标点击和经过链接滑出菜单

发布时间：2018-08-26 10:48:58 所属栏目：创业来源：站长网

导读：一款位于网页左上角的导航，当鼠标点击和经过链接时，动态滑出菜单，和刚刚给大家介绍的仿QQ停靠窗口的菜单有些类似，由于时间关系，菜单没有美化，如果您打算使用，请自己使用CSS美化一下吧。示例： !DOCTYPE htmlhtmlheadmeta charset=utf-8 /title左上

　　一款位于网页左上角的导航，当鼠标点击和经过链接时，动态滑出菜单，和刚刚给大家介绍的仿QQ停靠窗口的菜单有些类似，由于时间关系，菜单没有美化，如果您打算使用，请自己使用CSS美化一下吧。

　　示例：

<!DOCTYPE html> <html> <head> <meta charset="utf-8" /> <title>左上角导航菜单</title> <style type="text/css"> #divMenu0 {position:absolute; top:0px; left:30px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;} #divMenu1 {position:absolute; top:0px; left:150px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;} #divMenu2 {position:absolute; top:0px; left:250px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;} </style> <script language="javascript"> function lib_bwcheck(){ //Browsercheck (needed) this.ver=navigator.appVersion this.agent=navigator.userAgent this.dom=document.getElementById?1:0 this.opera5=this.agent.indexOf("<b>Opera</b> 5")>-1 this.ie5=(this.ver.indexOf("MSIE 5")>-1 && this.dom && !this.opera5)?1:0; this.ie6=(this.ver.indexOf("MSIE 6")>-1 && this.dom && !this.opera5)?1:0; this.ie4=(document.all && !this.dom && !this.opera5)?1:0; this.ie=this.ie4||this.ie5||this.ie6 this.mac=this.agent.indexOf("Mac")>-1 this.ns6=(this.dom && parseInt(this.ver) >= 5) ?1:0; this.ns4=(document.layers && !this.dom)?1:0; this.bw=(this.ie6 || this.ie5 || this.ie4 || this.ns4 || this.ns6 || this.opera5) return this } var bw=new lib_bwcheck() //How many pixels should it move every step? var tMove=10; //At what speed (in milliseconds, lower value is more speed) var tSpeed=40 //Do you want it to move with the page if the user scroll the page? var tMoveOnScroll=true //How much of the menu should be visible in the in state? var tShow=20 /******************************************************************** Contructs the menuobjects -Object functions *********************************************************************/ function makeMenu(obj,nest,show,move,speed){ nest=(!nest) ? "":'document.'+nest+'.' this.el=bw.dom?document.getElementById(obj):bw.ie4?document.all[obj]:bw.ns4?eval(nest+'document.'+obj):0; this.css=bw.dom?document.getElementById(obj).style:bw.ie4?document.all[obj].style:bw.ns4?eval(nest+'document.'+obj):0; this.x=this.css.left||this.css.pixelLeft||this.el.offsetLeft||0 this.y=this.css.top||this.css.pixelTop||this.el.offsetTop||0 this.state=1; this.go=0; this.mup=b_mup; this.show=show; this.mdown=b_mdown; this.height=bw.ns4?this.css.document.height:this.el.offsetHeight this.moveIt=b_moveIt; this.move=move; this.speed=speed this.obj = obj + "Object"; eval(this.obj + "=this") } // A unit of measure that will be added when setting the position of a layer. var px = bw.ns4||window.opera?"":"px"; function b_moveIt(x,y){this.x=x; this.y=y; this.css.left=this.x+px; this.css.top=this.y+px;} //Menu in function b_mup(){ if(this.y>-this.height+this.show){ this.go=1; this.moveIt(this.x,this.y-this.move) setTimeout(this.obj+".mup()",this.speed) }else{this.go=0; this.state=1} } //Menu out function b_mdown(){ if(this.y<eval(scrolled)){ this.go=1; this.moveIt(this.x,this.y+this.move) setTimeout(this.obj+".mdown()",this.speed) }else{this.go=0; this.state=0} } /******************************************************************************** Deciding what way to move the menu (this is called onmouseover, onmouseout or onclick) ********************************************************************************/ function moveTopMenu(num){ if(!oMenu[num].go){ if(!oMenu[num].state)oMenu[num].mup() else oMenu[num].mdown() } for(i=0;i<oMenu.length;i++){ if(i!=num && !oMenu[i].state){ oMenu[i].mup()} } } /******************************************************************************** Checking if the page is scrolled, if it is move the menu after ********************************************************************************/ function checkScrolled(){ for(i=0;i<oMenu.length;i++){ if(!oMenu[i].go){ y=!oMenu[i].state?eval(scrolled):eval(scrolled)-oMenu[i].height+oMenu[i].show oMenu[i].moveIt(oMenu[i].x,y) } } if(bw.ns4||bw.ns6) setTimeout('checkScrolled()',40) } /******************************************************************************** Inits the page, makes the menu object, moves it to the right place, show it ********************************************************************************/ function topMenuInit(){ oMenu=new Array() oMenu[0]=new makeMenu('divMenu0',"",tShow,tMove,tSpeed) oMenu[1]=new makeMenu('divMenu1',"",tShow,tMove,tSpeed) //* //Here's an example of how you can set the properties for each menu: //* oMenu[2]=new makeMenu('divMenu2',"",20,10,20) //* //You can add as many menus you want like the line above. //Just remember to add the actual divs in the style and body as well. scrolled=bw.ns4||bw.ns6?"window.pageYOffset":"document.body.scrollTop" //Placing and showing menus for(i=0;i<oMenu.length;i++){ oMenu[i].moveIt(oMenu[i].x,-oMenu[i].height+oMenu[i].show) oMenu[i].css.visibility='visible' } if(tMoveOnScroll) bw.ns4||bw.ns6?checkScrolled():window.onscroll=checkScrolled; } //Initing menu on pageload onload=topMenuInit; </script> <div id="divMenu0">  <a href="javascript://">链接一</a><br><br> <a href="javascript://">链接二</a><br><br> <a href="javascript://">链接三</a><br><br> <a href="javascript://">链接四</a><br><br> <a href="#" onclick="moveTopMenu(0); return false">菜单一</a> </div> <div id="divMenu1">  这是第二个菜单的内容<br><br> <a href="#" onmouseover="moveTopMenu(1)">菜单二</a> </div> <div id="divMenu2">  这是第三个菜单的内容<br> <a href="#" onclick="moveTopMenu(2); return false">菜单三</a> </div> </body> </html><div style="text-align:center;margin:30px 0 0 0;"><hr style="color:#999;height:1px;">如不能显示效果，请按Ctrl+F5刷新本页，更多网页代码：<a href='http://www.veryhuo.com/' target='_blank'>http://www.veryhuo.com/</a></div>
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