script05.js

来自「图灵程序设计丛书 JavaScript基础教程源代码」· JavaScript 代码 · 共 21 行

if (typeof document.oncontextmenu == "object") {
	if (document.all) {
		document.onmousedown = captureMousedown;
	}
	else {
		document.oncontextmenu = captureMousedown;
	}
}
else {
	window.oncontextmenu = captureMousedown;
}

function captureMousedown(evt) {
	var mouseClick = (evt) ? evt.which : window.event.button;
	
	if (mouseClick==1 || mouseClick==2 || mouseClick==3) {
		alert("Menu Disabled");
		return false;
	}
}