Copy codeThe Code is as follows:
<Script language = "Javascript">
// Shield right-click, Ctrl + N, Shift + F10, F5 refresh, and backspace key
// Shield F1 help
Function window. onhelp ()
{
Return false
}
Function KeyDown ()
{
// Alert (event. keyCode );
// Mask Alt + direction keys; mask Alt + direction keys →
If (window. event. altKey) & (window. event. keyCode = 37) | (window. event. keyCode = 39 )))
{
// Alert ("You are not allowed to use ALT + direction keys to move forward or backward the webpage! ");
Event. returnValue = false;
}
// Block the unrecord deletion key, block the F5 refresh key, and press Ctrl + R
If (event. keyCode = 116) | (event. ctrlKey & event. keyCode = 82 ))
{
Event. keyCode = 0;
Event. returnValue = false;
}
// Block Ctrl + n
If (event. ctrlKey) & (event. keyCode = 78 ))
{
Event. returnValue = false;
}
// Block shift + F10
If (event. shiftKey) & (event. keyCode = 121 ))
{
Event. returnValue = false;
}
// Block shift and use the left mouse button to open a new webpage
If (window. event. srcElement. tagName = "A" & window. event. shiftKey)
{
Window. event. returnValue = false;
}
// Block Alt + F4
If (window. event. altKey) & (window. event. keyCode = 115 ))
{
Window. showModelessDialog ("about: blank", "", "dialogWidth: 1px; dialogheight: 1px ");
Return false;
}
// Block Ctrl +
If (event. ctrlKey) & (event. keyCode = 65 ))
{
Return false;
}
}
</Script>