本文实例讲述了JS实现网页游戏中滑块响应鼠标点击移动效果。分享给大家供大家参考，具体如下：
这是网页游戏中的一个有趣效果，可以完成以下几个动作：滚动、scroll 8个方向、鼠标坐标获娶对象上下左右位置获取，大家可以自己添加、MoveReady和ScrollReady两个注释掉了 取消注释后防止鼠标连续点击效果叠加。
在线演示地址如下：
http://demo.jb51.net/js/2015/js-web-game-click-move-demo/
具体代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>网页游戏中的一个有趣效果</title> <style type="text/css"> html,body,div,span,object,iframe,h1,h2,h3,h4,h5,h6,p,blockquote,pre,a,address,big,cite,del,em,img,ins,small,strong,sub,sup,dl,dt,dd,ol,ul,li,fieldset,form,label,legend,table,tbody,tfoot,tr,th,td{margin: 0;padding: 0;border: 0;outline: 0;font-size: 100%;vertical-align: baseline;background: transparent;} body{font:12px/24px "宋体";background:#fff;color:#333;} ol, ul{list-style:none;} blockquote, q {quotes:none;} blockquote:before, blockquote:after, q:before, q:after {content: '';content:none;} :focus {outline:0;} ins {text-decoration:none;} del {text-decoration:line-through;} table {border-collapse:collapse;border-spacing:0;} label{cursor:pointer} input[type="button"]{cursor:pointer} button{cursor:pointer} strong{font-weight:normal;} em{font-style:normal} a{text-decoration:none;color:#f60} a:hover{text-decoration:underline;} .block{width:200px;height:200px;background:#e63;position:absolute;left:50%;top:50%;border:3px solid #fdd;overflow:hidden;} .moveBlock{width:1900px;height:2728px;background:url("http://files.jb51.net/file_images/article/201510/2015101993654799.jpg") left top;} </style> <script type="text/javascript"> var ie = ! -[1, ], myDate = new Date(); function Sin(x,v) { var y = Math.round(Math.sin(Math.PI*x/180)*100)/100; return ie?y*v*3:y*v; } /*返回数组序号*/ Num = function(e, eles) { for (var i = 0; i < eles.length; i++) { if (eles[i] == e) { return i; } } } /*字符串判定*/ GetCur = function(Str, cur) { var str = new RegExp(cur, "gi") return str.test(Str); } /*DOM构造*/ var div=function(id){return new HtmlEle.init(id);} HtmlEle={ init:function(id){ this[0]=id==Object?id:document.getElementById(id); return this; }, css:function(s){ for(var i in s){ this[0].style[i]=s[i]; } }, Obj:function(){ var obj=this[0]; var objTop=obj.offsetTop,objLeft=obj.offsetLeft,objWidth=obj.offsetWidth,objHeight=obj.offsetHeight; return {top:objTop,right:objLeft+objWidth,bottom:objTop+objHeight,left:objLeft,width:objWidth,height:objHeight} }, MoveReady:true, Move:function(s,point){ var obj=this[0],n=0,v=s,main=this,v2=90; if(this.MoveReady==true){ //main.MoveReady=false; var Top=function(){ n=n<v2?n+1:n; var m=Sin(n,v); if(m<Math.abs(s)){obj.style.top=P-m+"px"}else{obj.style.top=P-s+"px";clearInterval(myMove);main.MoveReady=true;}; } var Right=function(){ n=n<v2?n+1:n; var m=Sin(n,v); if(m<Math.abs(s)){obj.style.left=P+m+"px"}else{obj.style.right=P+s+"px";clearInterval(myMove);main.MoveReady=true;}; } var Bottom=function(){ n=n<v2?n+1:n; var m=Sin(n,v); if(m<Math.abs(s)){obj.style.top=P+m+"px"}else{obj.style.top=P+s+"px";clearInterval(myMove);main.MoveReady=true;}; } var Left=function(){ n=n<v2?n+1:n; var m=Sin(n,v); if(m<Math.abs(s)){obj.style.left=P-m+"px"}else{obj.style.left=P-s+"px";clearInterval(myMove);main.MoveReady=true;}; } switch(point){ case "top" : var P=obj.offsetTop,Point=Top;break; case "right" : var P=obj.offsetLeft,Point=Right;break; case "bottom" : var P=obj.offsetTop,Point=Bottom;break; case "left" : var P=obj.offsetLeft,Point=Left;break; } var myMove=setInterval(Point,5) } }, ScrollReady:true, Scroll:function(s,point){ var obj=this[0],n=0,v=s,main=this,v2=90; if(this.ScrollReady==true){ //main.ScrollReady=false; var Top=function(){ n=n<v2?n+1:n; var m=Sin(n,v); if(m<Math.abs(s)){obj.scrollTop=P+m}else{obj.scrollTop=P+s;clearInterval(myMove);main.ScrollReady=true;}; } var Right=function(){ n=n<v2?n+1:n; var m=Sin(n,v); if(m<Math.abs(s)){obj.scrollLeft=P-m}else{obj.scrollLeft=P-s;clearInterval(myMove);main.ScrollReady=true;}; } var Bottom=function(){ n=n<v2?n+1:n; var m=Sin(n,v); if(m<Math.abs(s)){obj.scrollTop=P-m}else{obj.scrollTop=P-s;clearInterval(myMove);main.ScrollReady=true;}; } var Left=function(){ n=n<v2?n+1:n; var m=Sin(n,v); if(m<Math.abs(s)){obj.scrollLeft=P+m}else{obj.scrollLeft=P+s;clearInterval(myMove);main.ScrollReady=true;}; } switch(point){ case "top" : var P=obj.scrollTop,Point=Top;break; case "right" : var P=obj.scrollLeft,Point=Right;break; case "bottom" : var P=obj.scrollTop,Point=Bottom;break; case "left" : var P=obj.scrollLeft,Point=Left;break; } var myMove=setInterval(Point,5) } }, Mouse:function(e,f){ switch(e){ case "click" : this[0].onclick=f;break; case "dbclick" : this[0].ondblclick=f;break; case "over" : this[0].onmouseover=f;break; case "out" : this[0].onmouseout=f;break; } }, MouseSite:function(e){ var e=e?e:window.event; return {x:e.clientX,y:e.clientY} } } HtmlEle.init.prototype=HtmlEle; </script> </head> <body> <div id="moveBlock"> <div></div> </div> <script type="text/javascript"> var sBlock=new div("moveBlock"); document.onclick=function(){ var site=sBlock.MouseSite(arguments[0]),s=200,b=30; var objSite=sBlock.Obj(); if(objSite.left<site.x && objSite.left+objSite.width/2-b>site.x && objSite.top<site.y &&objSite.bottom>site.y) sBlock.Scroll(s,"left"); if(objSite.right>site.x && objSite.right-objSite.width/2+b<site.x && objSite.top<site.y &&objSite.bottom>site.y) sBlock.Scroll(s,"right"); if(objSite.top<site.y && objSite.top+objSite.height/2-b>site.y && objSite.left<site.x && objSite.right>site.x) sBlock.Scroll(s,"top"); if(objSite.bottom>site.y && objSite.bottom-objSite.height/2+b<site.y) sBlock.Scroll(s,"bottom"); if(objSite.left>site.x) sBlock.Move(s,"left"); if(objSite.right<site.x) sBlock.Move(s,"right"); if(objSite.top>site.y) sBlock.Move(s,"top"); if(objSite.bottom<site.y) sBlock.Move(s,"bottom"); } window.onload=function(){sBlock[0].scrollTop=0;sBlock[0].scrollLeft=0;} </script> </body> </html>
希望本文所述对大家JavaScript程序设计有所帮助。
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