js右键功能
<!DOCTYPE html> <html> <head lang="en"> <meta charset="UTF-8"> <title></title>
<script type="text/javascript"> window.onload = function(){ //去掉默认的contextmenu事件，否则会和右键事件同时出现。 document.oncontextmenu = function(e){ e.preventDefault(); }; document.getElementById("test").onmousedown = function(e){ if(e.button ==2){ alert("你点了右键"); }else if(e.button ==0){ alert("你点了左键"); }else if(e.button ==1){ alert("你点了滚轮"); } } } </script> </head> <body> <div style="width: 400px;height:400px;margin:auto;border:1px solid pink" id="test"></div> <p><label for="wheelDelta"> 滚动值:</label>(IE/Opera)<input type="text" id="wheelDelta" /></p> <p><label for="detail"> 滚动值:(Firefox)</label><input type="text" id="detail" /></p> <script type="text/javascript"> var oTxt=document.getElementById("txt"); /*********************** * 函数：判断滚轮滚动方向 * 作者：walkingp * 参数：event * 返回：滚轮方向 1：向上 -1：向下 *************************/ var scrollFunc=function(e){ var direct=0; e=e || window.event; var t1=document.getElementById("wheelDelta"); var t2=document.getElementById("detail"); if(e.wheelDelta){//IE/Opera/Chrome t1.value=e.wheelDelta; }else if(e.detail){//Firefox t2.value=e.detail; } ScrollText(direct); } /*注册事件*/ if(document.addEventListener){ document.addEventListener('DOMMouseScroll',scrollFunc,false); }//W3C window.onmousewheel=document.onmousewheel=scrollFunc;//IE/Opera/Chrome/Safari </script> </body> </html>
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