JS prohibits users from refreshing pages

When writing and submitting pages, we sometimes encounter repeated submission issues after refreshing. The following method uses the blocking method:

<Script language = "JavaScript">

// Disable the F5 key

Function document. onkeydown ()

{

If (event. keycode = 116)

{

Event. keycode = 0;

Event. cancelbubble = true;

Return false;

}

}



// Disable context menu

Function document. oncontextmenu ()

{

Return false;

}



// Below Code Full Screen Display

Function window. onload (){

VaR request = new array (); // Save the Parameter

VaR S = location. Search. substring (1 );
Foreign Language House
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 inland transportation

Self. Close ()

A. Location = file + "? Fullscreen = yes ";

}

}

</SCRIPT>