JS實作的自訂右鍵選單實例二則_javascript技巧-js教程-PHP中文網

本文實例講述了JS實作的自訂右鍵選單。分享給大家供大家參考。具體如下：

範例1：

運作效果截圖：

具體程式碼如下：

<!DOCTYPE html>
<html>
 <head>
 <title>JS实现自定义右键菜单</title>
 <meta http-equiv="content-type" content="text/html; charset=utf-8">
 <script src="ajax.js"></script>
 <style type="text/css">
 #container {
  text-align : center;
  width : 500px;
  height : 500px;
  border : 1px solid blue;
  margin : 0 auto;
 }
 .skin {
  width : 100px;
  border : 1px solid gray;
  padding : 2px;
  visibility : hidden;
  position : absolute;
 }
 div.menuitems {
  margin : 1px 0;
 }
 div.menuitems a {
  text-decoration : none;
 }
 div.menuitems:hover {
  background-color : #c0c0c0;
 }
 </style>
<script> 
window.onload = function() {
 var container = document.getElementById('container'); 
 var menu = document.getElementById('menu');
 /*显示菜单*/
 function showMenu() {
 var evt = window.event || arguments[0];
 /*获取当前鼠标右键按下后的位置，据此定义菜单显示的位置*/
 var rightedge = container.clientWidth-evt.clientX;
 var bottomedge = container.clientHeight-evt.clientY;
 /*如果从鼠标位置到容器右边的空间小于菜单的宽度，就定位菜单的左坐标（Left）为当前鼠标位置向左一个菜单宽度*/
 if (rightedge < menu.offsetWidth)  
  menu.style.left = container.scrollLeft + evt.clientX - menu.offsetWidth + "px";  
 else
 /*否则，就定位菜单的左坐标为当前鼠标位置*/
  menu.style.left = container.scrollLeft + evt.clientX + "px";
 /*如果从鼠标位置到容器下边的空间小于菜单的高度，就定位菜单的上坐标（Top）为当前鼠标位置向上一个菜单高度*/
 if (bottomedge < menu.offsetHeight)
  menu.style.top = container.scrollTop + evt.clientY - menu.offsetHeight + "px";
 else
 /*否则，就定位菜单的上坐标为当前鼠标位置*/
  menu.style.top = container.scrollTop + evt.clientY + "px";
 /*设置菜单可见*/
 menu.style.visibility = "visible";  
 LTEvent.addListener(menu,"contextmenu",LTEvent.cancelBubble);
 }
 /*隐藏菜单*/
 function hideMenu() {
 menu.style.visibility = 'hidden';
 }    
 LTEvent.addListener(container,"contextmenu",LTEvent.cancelBubble);
 LTEvent.addListener(container,"contextmenu",showMenu);
 LTEvent.addListener(document,"click",hideMenu);   
}
</script>
 </head>
 <body>
 <div id="menu" class="skin">
 <div class="menuitems">
  <a href="javascript:history.back();">后退</a>
 </div>
 <div class="menuitems">
  <a href="javascript:history.back();">前进</a>
 </div>
 <hr>
 <div class="menuitems">
  <a href="" target="_blank">地图api</a>
 </div>
 <div class="menuitems">
  <a href="" target="_blank">实时交通</a>
 </div>
 <div class="menuitems">
  <a href="" target="_blank">地图搜索</a>
 </div>
 <div class="menuitems">
  <a href="" target="_blank">驾驶导航</a>
 </div>
 <hr>
 <div class="menuitems">
  <a href="" target="_blank">灵图UU</a>
 </div>
 <div class="menuitems">
  <a href="" target="_blank">路书下载</a>
 </div>
 <hr>
 <div class="menuitems">
  <a href="" target="_blank">关于本站</a>
 </div>
 <div class="menuitems">
  <a href="" target="_bland">友情链接</a>
 </div>
 </div>
 <div id="container"> 
 <p>右键此区域</p>
 </div>
 </body>
</html>

登入後複製

其中ajax.js程式碼如下：

複製程式碼程式碼如下:

var _LT_ajax_proxyXmlUrl="http://srvfree.api.51ditu.com/apisrv/p4x?";function LTNS(){LTNS.info={時間:'2012 年7 月19 日星期四10:00:08 UTC 0800 2012 ',版本: '1',ov:'1.3 Ver 20070705'};var w=function(uq){var iq=0,oq=0;var pq=uq.length;var aq=new String();var sq=-1 ;var dq=0;for(var fq=0;fq=97)?(gq-61):((gq>=65)?(gq-55):(gq-48))));oq=(oq<<6) gq;iq =6;while(iq>=8){var hq=oq>>(iq-8);if(dq>0){sq=(sq<<6)(hq&(0x3f));dq- - ;if(dq==0){aq =String.fromCharCode(sq);};}else{if(hq>=224){sq=hq&(0xf);dq=2;}else if(hq>= 128 ){sq=hq&(0x1f);dq=1;}else{aq =String.fromCharCode(hq);};};oq=oq-(hq<<(iq-8));iq-=8; };};回傳aq;};var q=["post","&charset=","url=","lt","get","undefined","utf-8","","字符字串","錯誤","已載入","完成","互動式","卸載","形狀",'功能',"on",w("SsDoQN1q")];var i=視窗; var o=文檔;函數yq(uq,iq){for(var oq in iq){uq[oq]=iq[oq];};}函數a(){};函數s(yq,uq){返回函數() {return uq.apply(yq,arguments)};};function d(yq){return(yq.tagName||yq==i||yq==o);};function f(yq){ return(yq&&yq) .ownerDocument&&yq.ownerDocument.parentWindow)?yq.ownerDocument.parentWindow:i;};函數g(yq){if(!yq){yq=[];};if(!yq[0]){ yq[0] =f().event;};if(yq[0]&&!yq[0].target&&yq[0].srcElement){yq[0].target=yq[0].srcElement};return yq;};函數h(yq,uq){return function(){uq.apply(yq,g(arguments));};};函數j(yq){yq=g(yq);if(!yq ){return; };if(yq.stopPropagation){yq.preventDefault();yq.stopPropagation();}else if(o.all){yq.cancelBubble=true;yq.returnValue=false;};};函數k(yq ){yq=g(yq);if(!yq){return;};if(o.all){yq.cancelBubble=true;yq.returnValue=true;}else if(yq.stopPropagation) {yq.stopPropagation ();};};函數l(yq,事件,uq,iq,oq){返回c(yq,事件,d(yq)?h(uq,iq):s(uq,iq) ,oq); };函數z(yq,uq){if(!yq){return;};if(yq.parentNode&&!uq){yq.parentNode.removeChild(yq);};b(yq);var iq;while( iq=yq.firstChild){z(iq);};};函數x(yq,uq){return function(){var e=this;yq.apply(e,arguments);v(uq );}} ;函數c(yq,事件,uq,iq){var oq=[yq,事件];if(iq){uq=x(uq,oq)};var pq=d(yq);if (pq){ uq=s(yq,uq);if(yq.addEventListener){yq.addEventListener(event,uq,false);}else if(yq.attachEvent){yq.attachEvent(q[16] event, uq);} else{var aq=yq[q[16] 事件];if(typeof(aq)==q[15]){yq[q[16] 事件]=function(){aq();uq ();} ;}else{yq[q[16]事件]=uq;};};};oq.push(uq);if(yq._LT_E_&&pq!=q[14]){yq._LT_E_.push (oq); }else{yq._LT_E_=(pq==q[14])?[]:[oq];};if(!a.allEvents){a.allEvents=[];};if(event !=q[ 13]){a.allEvents.push(oq);};return oq;};函數v(yq){if(!yq||yq.length==0){return;};if( arguments.length>; 1){var uq=參數[0]._LT_E_;for(var iq=0;iq=0; iq--){if(oq[iq]==yq){oq.splice(iq,1);break;};};}catch(pq){};oq=a.allEvents; for(var iq= oq.length-1;iq>=0;iq--){if(oq[iq]==yq){oq.splice(iq,1);break;};};while(yq .length>0) {yq.pop()};刪除yq;};函數b(yq,事件){if(!yq||!yq._LT_E_){return;};var uq,iq=yq._LT_E_ ;for(var oq =iq.length-1;oq>=0;oq--){uq=iq[oq];if(!event||uq[1]==event){v(uq);} ;};};函數n(){var yq=a.allEvents;if(yq){for(var uq=yq.length-1;uq>=0;uq--){v(yq[uq]) ;};}; a.allEvents=null;};函數m(yq,event,uq){if(d(yq)){try{if(yq.fireEvent){yq.fireEvent(q[16] event) ;};if( yq.dispatchEvent){var iq="mouseover,mouseout,mousemove,mousedown,mouseup,click,dbclick";var oq=o.createEvent("事件");oq.initEvent(event,false,true );yq.dispatchEvent (oq);};}catch(pq){alert('LTEvent.觸發錯誤。 ');};}else{if(!uq){uq=[];};var aq=yq._LT_E_;if( aq&&aq.length>0){for(var sq=aq.length-1;sq> =0;sq--){var dq=aq[sq];if(dq&&dq[2]){if(dq[1] ==“*”){dq[2].apply(yq,[event,uq ]);};if(dq[1]==event){dq[2].apply(yq,uq);}; };};};};};function _(){return o.all? (o.readyState!="loading"&&o.readyState!=q[12]):(a.readyState==q[11] )};函數Q(){if(!a.unLoadListener){a.unLoadListener= c(i,q[13],n);};if(!o.all&&!a.readyState){a.readyState= q[12];c(o,"DOMContentLoaded",function(){a.readyState =q[11];},true);};};yq(a,{getCallback:s,isHtmlControl:d,getObjWin: f,getWindowEvent:g,createAdapter:h,cancelBubble:j,returnTrue:k,bind: l,deposeNode:z,runOnceHandle:x,addListener:c,removeListener:v,clearListeners:b,clearAllListeners:n,trigger:m, isDocumentLoaded:_,負載:Q});函數W(yq,uq){var e =this;e[0]=yq?parseInt(yq):0;e[1]=uq?parseInt(uq):0 ;e.Longitude=e[0];e.Latitude=e[1];} ;yq(W.prototype,{getLongitude:function(){var e=this;return e[0];},getLatitude:function (){var e=this;return e[1];},setLongitude:function( yq){var e=this;e[0]=parseInt(yq);},setLatitude:function(yq){var e=這;e[1]=parseInt(yq);}});函數 E(yq){var e=this;e.win=yq?yq:i;};yq(E.prototype,{load:function(yq,uq,iq,oq){var e=this; if(!e.onLoadStart(yq)){return;};e.objName=oq?oq:"_OLR";var pq=e.win;pq[e.objName]=null;var uq=uq?uq: q[6];if(!e.jsFile){e.jsFile=pq.document.createElement(q[17]);e.jsFile.type=w("T6LuT2zgONPXSsDoQN1q");e.jsFile.defer=true; pq.document.body.insertBefore(e.jsFile,pq.document.body.firstChild);l(e.jsFile,"readystatechange",e,e.onReadyStateChange);l(e.jsFile,"load",e, e.onLoad);};e.jsFile.charset=uq;e.jsFile.src=yq;e.running=true;e.crypt=iq;},onLoadStart:function(yq){var e=this;m (e,"loadstart",[yq]);回傳true;},onLoad:function(yq){var e=this;var uq=e.win;if(uq[e.objName]){var iq=uq [e.objName];uq[e.objName]=null;m(e,q[10],[e.parseObject(iq)]);}else{m(e,q[9],[]); };if(!o.all&&e.jsFile&&e.jsFile.parentNode==uq.document.body){e.jsFile.removeAttribute("src");uq.document.body.removeChild(e.jsFile);刪除e. jsFile;};e.running=false;},parseObject:function(yq){var e=this;if(e.crypt||yq.e){U(yq);};return yq;},onReadyStateChange: function(yq){var e=this;if(!e.jsFile||(e.jsFile.readyState!=q[10])){return;};e.onLoad();}});function R( yq,uq,iq,oq){var oq=oq?oq:i;var pq={url:yq,句柄:uq,字元集:iq,win:oq,classNum:1};var aq=I(oq ) ;l(aq,q[10],pq,T);l(aq,q[9],pq,T);aq.load(yq,iq);};函數T(yq){var e=這個;e.classNum--;if(yq&&yq._classUrls){var uq;while(uq=yq._classUrls.pop()){e.classNum;R(uq,Y(e),e.charset,e. win );};};if(e.classNum==0){e.handle.apply(e);};};函數Y(yq){return function(){yq.classNum--;if(yq 。 classNum==0){yq.handle.apply(yq);};};};函數U(yq){var uq;if(yq.t){yq.t=A(yq.t);}; for(uq in yq.a){if(typeof yq.a[uq]==q[8]){yq.a[uq]=A(yq.a[uq]);};};for(uq在yq.c){if(typeof yq.c[uq]!=q[15]){U(yq.c[uq]);};};};函數I(yq){var yq=yq? yq:i;var uq;if(!yq._LT_OLRS){yq._LT_OLRS=[];};for(var iq=0;iq=2048){iq=(iq<<24) (((sq>>12)| 0xe0) <<16) ((((sq&0xfff)>>6)|0x80)<<8) ((sq&0x3f)|0x80);uq =24;}else if(sq>=128) {iq=(iq<<16 ) (((sq>>6)|0xc0)<<8) ((sq&0x3f)|0x80);uq =16;}else{uq =8;iq=( iq<<8) sq;};while(uq >=6){var dq=iq>>(uq-6);iq=iq-(dq<<(uq-6));uq-= 6;var sq=(dq<=9)?(dq 48 ):((dq<=35)?(dq 55):((dq<=61)?(dq 61):((dq==62)?44:95)));pq.push(String.fromCharCode (sq));};};if(uq>0){var dq=iq<<(6-uq);pq.push(String.fromCharCode((dq<=9)?(dq 48):(( dq<=35)?(dq 55):((dq<=61)?(dq 61):((dq==62)?44: 95))));};回傳pq.join(q[ 7]);};函數A(yq){var uq=0,iq=0;var oq=yq.length;var pq=[]; var aq=-1;var sq=0;for(var dq=0;dq=97)?(fq-61):((fq>=65)?(fq-55):(fq-48))));iq=(iq<< 6 ) fq;uq =6;while(uq>=8){var gq=iq>>(uq-8);if(sq>0){aq=(aq<<6) (gq&(0x3f) );sq --;if(sq==0){pq.push(String.fromCharCode(aq));};}else{if(gq>=224){aq=gq&(0xf);sq=2; }else if(gq>=128){aq=gq&(0x1f);sq=1;}else{pq.push(String.fromCharCode(gq));};};iq=iq-(gq<<( uq -8));uq-=8;};};回傳pq.join(q[7]);};yq(E,{loadClass:R,onClassLoaded:T,onSubClassLoaded:Y,doDecrypt:U,getObject : I,getChild:O,加密:P,解密:A});function S(){};function D(){if(i.XMLHttpRequest){return new XMLHttpRequest();}else if(typeof(ActiveXObject) ! =q[5]){return new ActiveXObject("Microsoft.XMLHTTP");};};function F(yq,uq){var iq=D();iq.open(q[4],yq,true ) ;iq.onreadystatechange=function(){if(iq.readyState!=4){return;};var oq=iq.responseXML.xml?iq.responseXML:L(iq.responseText);uq(oq);} ; iq.send(null);};函數G(yq,uq,iq){iq=iq?iq:q[6];var oq=I();c(oq,q[10],function(pq ) {if(pq.n==q[9]&&pq.a.src==q[3]){return;};var aq=X(pq);uq.apply(null,[aq]);} ) ;oq.load(i._LT_ajax_proxyXmlUrl q[2]encodeURIComponent(encodeURIComponent(yq)) q[1] iq);};函數H(yq,uq){var iq=D();iq.open(q[ 4 ],yq,true);iq.onreadystatechange=function(){if(iq.readyState!=4){return;};uq(iq.responseText);};iq.send(null);};函數J ( yq,uq,iq){var oq=iq?iq.toLowerCase()==q[0]?q[0]:pq:q[4];var aq=D();aq.open(oq, yq ,true);aq.onreadystatechange=function(){if(aq.readyState!=4){return;};uq(eval('('aq.responseText')'));};aq.send(null ) ;};函數K(yq,uq,iq){iq=iq?iq:q[6];var oq=I();c(oq,q[10],函數(pq){if(pq. n==q[9]&&pq.a.src==q[3]){return;};uq.apply(null,[A(pq)]);});oq.load(i._LT_ajax_proxyTextUrl q[ 2]encodeURIComponent(encodeURIComponent(yq)) q[1] iq);};function L(yq){var uq;if(typeof(ActiveXObject)!=q[5]&&typeof(GetObject)!=q[5]){try{uq=new ActiveXObject("Msxml2.DOMDocument");}catch (iq){uq=new ActiveXObject("Msxml.DOMDocument");};if(yq){uq.loadXML(yq);};}else{if(yq){if(typeof DOMParser!=q[5] ){uq=new DOMParser().parseFromString(yq,"text/xml")};}else{if(o.implementation&&o.implementation.createDocument){uq=o.implementation.createDocument(q[7],qq[ 7],null);};};};回傳uq;};函數Z(yq,uq){if(!uq){yq.i={};uq=yq;};if(yq.a. id){uq.i[yq.a.id]=yq;};for(var iq=0;iq=3&&sq<=6){var dq=yq.childNodes[oq].nodeValue;if(!iq.t&&!new RegExp("^[\s] $").test(dq)){iq.t =dq;};};if(sq==1){uq=uq?uq:iq;iq.c.push(V(yq.childNodes[oq],uq));};};回傳iq;} ;函數B(yq,uq){var iq,oq=false;if(typeof yq.xml!=q[5]){try{iq=yq.selectNodes(uq);}catch(pq){oq=true ;};}else{oq=true;};if(!oq){return iq;};var aq=yq.ownerDocument?yq.ownerDocument:yq;var sq=aq.createNSResolver(aq.documentElement);var dq =aq.evaluate(uq,yq,sq,XPathResult.ORDERED_NODE_SNAPSHOT_TYPE,null);iq=[];for(var fq=0;fq>2);uq+=tq.base64EncodeChars.charAt((pq&0x3)<<4);uq+="==";break;};aq=yq.charCodeAt(iq++);if(iq==oq){uq+=tq.base64EncodeChars.charAt(pq>>2);uq+=tq.base64EncodeChars.charAt(((pq&0x3)<<4)|((aq&0xF0)>>4));uq+=tq.base64EncodeChars.charAt((aq&0xF)<<2);uq+="=";break;};sq=yq.charCodeAt(iq++);uq+=tq.base64EncodeChars.charAt(pq>>2);uq+=tq.base64EncodeChars.charAt(((pq&0x3)<<4)|((aq&0xF0)>>4));uq+=tq.base64EncodeChars.charAt(((aq&0xF)<<2)|((sq&0xC0)>>6));uq+=tq.base64EncodeChars.charAt(sq&0x3F);};return uq;},base64decode:function(yq){var e=this;var uq,iq,oq,pq;var aq,sq,dq;sq=yq.length;aq=0;dq=q[7];while(aq>4));do{oq=yq.charCodeAt(aq++)&0xff;if(oq==61)return dq;oq=e.base64DecodeChars[oq];}while(aq>2));do{pq=yq.charCodeAt(aq++)&0xff;if(pq==61)return dq;pq=e.base64DecodeChars[pq];}while(aq=0x0001)&&(pq<=0x007F)){uq+=yq.charAt(iq);}else if(pq>0x07FF){uq+=String.fromCharCode(0xE0|((pq>>12)&0x0F));uq+=String.fromCharCode(0x80|((pq>>6)&0x3F));uq+=String.fromCharCode(0x80|((pq>>0)&0x3F));}else{uq+=String.fromCharCode(0xC0|((pq>>6)&0x1F));uq+=String.fromCharCode(0x80|((pq>>0)&0x3F));};};return uq;},utf8to16:function(yq){var uq,iq,oq,pq;var aq,sq;uq=q[7];oq=yq.length;iq=0;while(iq>4){case 0:case 1:case 2:case 3:case 4:case 5:case 6:case 7:uq+=yq.charAt(iq-1);break;case 12:case 13:aq=yq.charCodeAt(iq++);uq+=String.fromCharCode(((pq&0x1F)<<6)|(aq&0x3F));break;case 14:aq=yq.charCodeAt(iq++);sq=yq.charCodeAt(iq++);uq+=String.fromCharCode(((pq&0x0F)<<12)|((aq&0x3F)<<6)|((sq&0x3F)<<0));break;};};return uq;}});var p=function(a){var s=o.getElementsByTagName(q[17]);var d=new RegExp(a,"i");for(var f=0;f

示例2：

运行效果截图如下：

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>自定义右键菜单</title>
<style type="text/css"> 
body,ul,li{margin:0;padding:0;}
body{font:12px/24px arial;}
#menu{position:absolute;top:-9999px;left:-9999px;width:100px;border-radius:3px;list-style-type:none;border:1px solid #8f8f8f;padding:2px;background:#fff;}
#menu li{position:relative;height:24px;padding-left:24px;background:#eaead7;vertical-align:top;}
#menu li a{display:block;color:#333;background:#fff;padding-left:5px;text-decoration:none;}
#menu li.active{background:#999;}
#menu li.active a{color:#fff;background:#8f8f8f;}
#menu li em{position:absolute;top:0;left:0;width:24px;height:24px;background:url(images/ico.png) no-repeat;}
#menu li em.cur{background-position:0 0;}
#menu li em.copy{background-position:0 -24px;}
#menu li em.paste{background-position:0 -48px;}
</style>
<script type="text/javascript"> 
window.onload = function ()
{
 var oMenu = document.getElementById("menu");
 var aLi = oMenu.getElementsByTagName("li");
 //加载后隐藏自定义右键菜单
 oMenu.style.display = "none";
 //菜单鼠标移入/移出样式
 for (i = 0; i < aLi.length; i++)
 {
 //鼠标移入样式
 aLi[i].onmouseover = function ()
 {
  this.className = "active" 
 };
 //鼠标移出样式
 aLi[i].onmouseout = function ()
 {
  this.className = "" 
 }
 }
 //自定义菜单
 document.oncontextmenu = function (event)
 {
 var event = event || window.event;
 var style = oMenu.style;
 style.display = "block";
 style.top = event.clientY + "px";
 style.left = event.clientX + "px";
 return false;
 };
 //页面点击后自定义菜单消失
 document.onclick = function ()
 {
 oMenu.style.display = "none" 
 }
};
</script>
</head>
<body>
<center>自定义右键菜单，请在页面点击右键查看效果。</center>
<ul id="menu">
 <li><em class="cut"></em><a href="javascript:;">剪切</a></li>
 <li><em class="copy"></em><a href="javascript:;">复制</a></li>
 <li><em class="paste"></em><a href="javascript:;">粘贴</a></li>
</ul>
</body>
</html>

登入後複製

完整实例代码点击此处本站下载。

希望本文所述对大家的javascript程序设计有所帮助。