JavaScript 设计模式 － Facade(外观模式/门面模式)－封装浏览器差异

javascript-facade-pattern-2.js

var myevent = {
  // ...
  stop: function (e) {
    //其他
    if(typeof e.preventDefault === "function") {
      e.preventDefault();
    }
    if(typeof e.stopPropagation === "function") {
      e.stopPropagation();
    }

    //IE
    if(typeof e.returnValue === "boolean") {
      e.returnValue = false;
    }
    if(typeof e.cancelBubble === "boolean") {
      e.cancelBubble = true;
    }
  }
  // ...
};