js实现鼠标点击左上角滑动菜单效果代码

web前端|js教程

js,鼠标点击,滑动菜单

web前端-js教程

这篇文章主要介绍了js实现鼠标点击左上角滑动菜单效果代码，涉及JavaScript基于鼠标事件动态变换页面元素样式的技巧，具有一定参考借鉴价值，需要的朋友可以参考下，具体如下：

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这里需要鼠标点击激活的网页左上角菜单，不点击不会滑出来，可以改造成二级菜单。

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运行效果截图如下：

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在线演示地址如下：

/js//js-click-hd-show-menu-style-codes/

具体代码如下：

#pMenu0 {position:absolute; top:0px; left:30px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;}#pMenu1 {position:absolute; top:0px; left:150px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;}#pMenu2 {position:absolute; top:0px; left:250px; visibility:hidden; font-family:arial,helvetica,sans-serif; font-size:18px; font-weight:bold;} function lib_bwcheck(){ //Browsercheck (needed) this.ver=navigator.appVersion this.agent=navigator.userAgent this.dom=document.getElementById?1:0 this.opera5=this.agent.indexOf("Opera 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()var tMove=10;var tSpeed=40var tMoveOnScroll=truevar tShow=20function 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") }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;}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 outfunction 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} }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()} }}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)}function topMenuInit(){ oMenu=new Array() oMenu[0]=new makeMenu(pMenu0,"",tShow,tMove,tSpeed) oMenu[1]=new makeMenu(pMenu1,"",tShow,tMove,tSpeed) //* oMenu[2]=new makeMenu(pMenu2,"",20,10,20) //* scrolled=bw.ns4||bw.ns6?"window.pageYOffset":"document.body.scrollTop" 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;}onload=topMenuInit;

链接一

链接二

链接三

链接四

菜单一

这是第二个菜单的内容

菜单二

这是第三个菜单的内容

菜单三

以上就是本章的全部内容，更多相关教学请访问JavaScript视频教学！