摘要:
window.onbeforeunload = function() {return " ";}document.onkeydown = function() {if ((window.event.keyCode == 116) || //屏蔽 F5(window.event.keyCode == 122) || //屏蔽 F11(window.event.shiftKey && window.event.keyCode == 121) //shift+F10) {window.event.keyCode = 0;window.event.returnVal 阅读全文