Jquery ctrl+key快捷键兑现 How to create Ctrl+Key shortcuts in Javascript

Jquery ctrl+key快捷键实现 How to create Ctrl+Key shortcuts in Javascript
兼容ie6-ie8/Chrome/Firefox

/** * Ctrl+Key shortcuts * @param {string} key,etc:'A' * @param {function} callback:event callback * @param {array} args:callback's args */$.ctrl = function(key, callback, args){    var isCtrl = false;    $(document).keydown(function(e){        if (e.which === 17)             isCtrl = true;        if (e.which === key.charCodeAt(0) && isCtrl === true) {            callback.apply(this, args);            return false;        }    }).keyup(function(e){        if (e.which === 17)             isCtrl = false;    });};