JS prevent page refresh and rewind method

The example of this article is about JS prevent page refresh and backward method. Share to everyone for your reference. The implementation methods are as follows:

?

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26-27--28 29---30 31--32 33 34 35 36 37 38-39 40 41 42 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66-67-68 69 70 71 72 73 74 75 76 77 78 79-80

<script language= "JavaScript" >//Disable F5 key function Document.onkeydown () {if (event.keycode==116) {Event.keycode = 0; Event.cancelbubble = true; return false; }//No Right-key pop-up menu function Document.oncontextmenu () {return false;}//The following code implements full screen function window.onload () {var Request = NE W Array ();//save parameter var s = location.search.substring (1); if (s && s!= "") {var list = S.split ("&"); for (Var i=0 i < list.length; i++) {var pair = List[i].split ("=" ); if (Pair[0] && pair[0]!= "") {Request[unescape (pair[0]) = Unescape (Pair[1]);} var fullscreen=request["fullscreen"]; if (fullscreen!= "yes") {var file =self.location; var a = window.open ("About:blank", "", "Fullscreen=yes"); Self.opener=null; Self.close (); A.location=file + "Fullscreen=yes"; } </script> <script language= "Javascript" ><!--//Shielded right mouse button, CTRL + N, SHIFT+F10, F11, F5 refresh, backspace//author: Meizz (Plum blossom rain) 2002-6-18 function Document.oncontextmenu () {event.returnvalue=false;}//Mask mouse right button function Window.onhelp () {REturn false}//shield F1 help function Document.onkeydown () {if (Window.event.altKey) && ((window.event.keycode==37) | | Shielding ALT + Direction key ← (window.event.keycode==39))//shielding ALT + Direction key →{alert ("You are not allowed to use ALT + Direction key forward or back page!") "); Event.returnvalue=false; }/* Note: This is not really shielding ALT + direction key, because ALT + arrow pop-up warning box, hold down the ALT key, with the mouse point off the warning box, this shielding method is ineffective. In the future, if there is a real master to screen the Alt key method, please inform. */if ((event.keycode==8) | |//SHIELDING BACKSPACE Delete key (event.keycode==116) | |/Mask F5 Refresh key (Event.ctrlkey && event.keycode==82)) {/ /ctrl + R event.keycode=0; Event.returnvalue=false; } if (event.keycode==122) {event.keycode=0;event.returnvalue=false;}//Mask F11 if (Event.ctrlkey && event.keycode==78) Event.returnvalue=false; Shielding CTRL + N if (event.shiftkey && event.keycode==121) Event.returnvalue=false; Shielded Shift+f10 if (window.event.srcElement.tagName = = "A" && window.event.shiftKey) Window.event.returnValue = False Screen shift plus left mouse button new page if ((Window.event.altKey) && (window.event.keycode==115))//Shield Alt+f4 { Window.showmodelessdiaLog ("About:blank", "", "dialogwidth:1px;dialogheight:1px"); return false; }} </script>

The

wants this article to help you with your JavaScript programming.