JavaScript跨浏览器解决方案集合

版权声明：本文为博主原创文章，未经博主允许不得转载。 https://blog.csdn.net/marcelwu/article/details/65629196

一、事件处理程序（event handler）

// Cross-browser event handler
var EventUtil = {
    addHandler: function(element, type, handler) {
        if (element.addEventListener) {
            element.addEventListener(type, handler, false);
        } else if (element.attachEvent) {
            element.attachEvent('on' + type, handler);
        } else {
            element['on' + type] = handler;
        }
     },

    getEvent: function(event) {
        return event ? event : window.event;
    },

    getTarget: function(event) {
        return event.target || event.srcElement;  
    },

    preventDefault: function(event) {
        if (event.preventDefault) {
            event.preventDefault();
        } else {
            event.returnValue = false;
        }
    },

    removeHandler: function(element, type, handler){
         if (element.removeEventListener) {
             element.removeEventListener(type, false);
         } else if (element.detachEvent) {
             element.detachEvent('on' + type, handler);
         } else {
             element['on' +  type] = handler;
         }
    },

    stopPropagation: function(event) {
        event.stopPropagation ? event.stopPropagation() : (event.cancelBubble = true);
    }
};