页面禁用右键及F12

//禁用右键
document.oncontextmenu = function () { return false; };
//禁用开发者工具F12
document.onkeydown = function () {
    if (window.event && window.event.keyCode == 123) {
        event.keyCode = 0;
        event.returnValue = false;
        return false;
    }
};