js屏蔽浏览器右键菜单,粘贴,复制,剪切,选中

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<!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>js屏蔽浏览器右键菜单,粘贴,复制,剪切,选中</title><meta name="description" content="js代码制作屏蔽浏览器右键菜单,屏蔽浏览器粘贴,屏蔽浏览器复制,屏蔽浏览器剪切,屏蔽浏览器选中,不会屏蔽搜索引擎蜘蛛抓取页面,不影响seo优化。可以设置网页内容代码不被用户随意下载等。" /></head><body><script type="text/javascript">//屏蔽右键菜单document.oncontextmenu = function (event){if(window.event){event = window.event;}try{var the = event.srcElement;if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){return false;}return true;}catch (e){return false; } }//屏蔽粘贴document.onpaste = function (event){if(window.event){event = window.event;}try{var the = event.srcElement;if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){return false;}return true;}catch (e){return false;}}//屏蔽复制document.oncopy = function (event){if(window.event){event = window.event;}try{var the = event.srcElement;if(!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){return false;}return true;}catch (e){return false;}}//屏蔽剪切document.oncut = function (event){if(window.event){event = window.event;}try{var the = event.srcElement;if(!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){return false;}return true;}catch (e){return false;}}//屏蔽选中document.onselectstart = function (event){if(window.event){event = window.event;}try{var the = event.srcElement;if (!((the.tagName == "INPUT" && the.type.toLowerCase() == "text") || the.tagName == "TEXTAREA")){return false;}return true;} catch (e) {return false;}}</script><div style="width:600px;margin:40px auto;text-align:center;border:solid 1px #FFCA52;background:#FFFDD2;height:28px;line-height:28px;font-size:14px;padding:5px 10px;color:#ff0000;font-weight:800;">单页禁用右键菜单、粘贴、复制、剪切、选中操作</div>test</body></html>
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