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jquery禁用右鍵、文本選擇功能、復制按鍵的實現

   代碼如下:

  //禁用右鍵、文本選擇功能、復制按鍵

  $(document).bind("contextmenu",function(){return false;});

  $(document).bind("selectstart",function(){return false;});

  $(document).keydown(function(){return key(arguments[0])});

  //按鍵時提示警告

  function key(e){

  var keynum;

  if(window.event){

  keynum = e.keyCode; // IE

  }else if(e.which){

  keynum = e.which; // Netscape/Firefox/Opera

  }

  if(keynum == 17){

  alert("禁止復制內容!");

  return false;

  }

  }

  //禁用右鍵、文本選擇功能、復制按鍵

  $(document).bind("contextmenu",function(){return false;});

  $(document).bind("selectstart",function(){return false;});

  $(document).keydown(function(){return key(arguments[0])});

  //按鍵時提示警告

  function key(e){

  var keynum;

  if(window.event) // IE

  {

  keynum = e.keyCode;

  }

  else if(e.which) // Netscape/Firefox/Opera

  {

  keynum = e.which;

  }

  if(keynum == 17){ alert("禁止復制內容!");return false;}

  }

  //屏蔽鼠標右鍵、Ctrl+N、Shift+F10、F11、F5刷新、退格鍵

  function document.oncontextmenu(){event.returnValue=false;}//屏蔽鼠標右鍵

  function window.onhelp(){return false} //屏蔽F1幫助

  function document.onkeydown(){

  if((window.event.altKey)&&

  ((window.event.keyCode==37)|| //屏蔽Alt+方向鍵←

  (window.event.keyCode==39))){ //屏蔽Alt+方向鍵→

  alert("不准你使用ALT+方向鍵前進或後退網頁!");

  event.returnValue=false;

  } if((event.keyCode==8)|| //屏蔽退格刪除鍵

  (event.keyCode==116)|| //屏蔽F5刷新鍵

  (event.ctrlKey && event.keyCode==82)){ //Ctrl+R

  event.keyCode=0;

  event.returnValue=false;

  }

  if(event.keyCode==122){event.keyCode=0;event.returnValue=false;} //屏蔽F11

  if(event.ctrlKey && event.keyCode==78)event.returnValue=false; //屏蔽Ctrl+n

  if(event.shiftKey && event.keyCode==121)event.returnValue=false; //屏蔽shift+F10

  if(window.event.srcElement.tagName=="A" && window.event.shiftKey)

  window.event.returnValue=false; //屏蔽shift加鼠標左鍵新開一網頁

  if((window.event.altKey)&&(window.event.keyCode==115)){ //屏蔽Alt+F4

  window.showModelessDialog("about:blank","","dialogWidth:1px;dialogheight:1px");

  return false;

  }

  }

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