关于事件管理及domReady的完美实现

2010-08-27 08:29:06 354 阅读 AI 写同款 · GEO 优化AI 选题数据监测一键分发 ›

esxi8.0.3如何添加USB外置硬盘本文介绍了在ESXi系统中配置外置USB硬盘作为数据存储的完整步骤：1）通过SSH禁用USB仲裁服务并关闭自启；2）识别已连接的USB硬盘设备路径；3）使用partedUtil创建GPT分区表并计算扇区范围；4）设置VMFS6分区并格式化。关键命令包括停止usbarbitrator服务、partedUtil分区操作以及vmkfstools格式化命令。整个过程需通过SSH执行，最终将USB硬盘配置为名为"USB_Datastore"的VMFS6存储设备。阅读详情



var K = function () { 

    var undef; 

    return { 

        module : function (newmodule) { 

            if (this[newmodule] === undef) { 

                this[newmodule] = {}; 

                return this[newmodule]; 

            } 

            return this[newmodule]; 

        } 

    }; 

}() ; 



K.module('util'); 



K.util.event = (function(){ 

    // http://dean.edwards.name/weblog/2005/10/add-event/ 

    // a counter used to create unique IDs 

    var guid = 1; 

    function _addEvent(element, type, handler) { 

        if (element.addEventListener) { 

            element.addEventListener(type, handler, false); 

        } else { 

            // assign each event handler a unique ID 

            if (!handler.$$guid) handler.$$guid = guid++; 

            // create a hash table of event types for the element 

            if (!element.events) element.events = {}; 

            // create a hash table of event handlers for each element/event pair 

            var handlers = element.events[type]; 

            if (!handlers) { 

                handlers = element.events[type] = {}; 

                // store the existing event handler (if there is one) 

                if (element["on" + type]) { 

                    handlers[0] = element["on" + type]; 

                } 

            } 

            // store the event handler in the hash table 

            handlers[handler.$$guid] = handler; 

            // assign a global event handler to do all the work 

            element["on" + type] = handleEvent; 

        } 

    } 

    function _removeEvent(element, type, handler) { 

        if (element.removeEventListener) { 

            element.removeEventListener(type, handler, false); 

        } else { 

            // delete the event handler from the hash table 

            if (element.events && element.events[type]) { 

                delete element.events[type][handler.$$guid]; 

            } 

        } 

    } 

    function handleEvent(event){ 

        var returnValue = true; 

        // grab the event object (IE uses a global event object) 

        event = event || fixEvent(((this.ownerDocument || this.document || this).parentWindow || window).event); 

        // get a reference to the hash table of event handlers 

        var handlers = this.events[event.type]; 

        // execute each event handler 

        for (var i in handlers) { 

            this.$$handleEvent = handlers[i]; 

            if (this.$$handleEvent(event) === false) { 

                returnValue = false; 

            } 

        } 

        return returnValue; 

    } 

    function fixEvent(event){ 

        // add W3C standard event methods 

        event.preventDefault=fixEvent.preventDefault; 

        event.stopPropagation=fixEvent.stopPropagation; 

        return event; 

    } 

    fixEvent.preventDefault=function(){ 

        this.returnValue=false; 

    } 

    fixEvent.stopPropagation=function(){ 

        this.cancelBubble=true; 

    } 

    //http://www.thefutureoftheweb.com/blog/adddomloadevent 

    var load_events = [],load_timer,script,done,exec, 

        init = function () { 

            done = true; 

            clearInterval(load_timer);// kill the timer 

            // execute each function in the stack in the order they were added 

            while (exec = load_events.shift()) exec(); 

            if (script) script.onreadystatechange = ''; 

        }; 

    return { 

        domReady:function(func) { 

            // if the init function was already ran, just run this function now and stop 

            if (done) return func(); 

            if (!load_events[0]) { 

                // for Mozilla/Opera9 

                if (document.addEventListener) document.addEventListener("DOMContentLoaded", init, false); 



                // for Internet Explorer 

                /*@cc_on @*/ 

                /*@if (@_win32) 

                    var proto = "javascript:void(0)";                     

                    if (location.protocol == "https:") proto = "//0"; 

                    document.write("<script id=__ie_onload defer src="+proto+"><\/scr"+"ipt>"); 

                    script = document.getElementById("__ie_onload"); 

                    script.onreadystatechange = function() {     

                        if (this.readyState == "complete") init();  

                    }; 

                /*@end @*/ 



                // for Safari 

                if (/WebKit/i.test(navigator.userAgent)) { // sniff 

                    load_timer = setInterval(function() { 

                        if (/loaded|complete/.test(document.readyState)) init(); // call the onload handler 

                    }, 10); 

                } 

                // for other browsers set the window.onload, but also execute the old window.onload 

                _addEvent(window,"load",init); 

            } 

            load_events.push(func); 

        }, 

        addEvent:_addEvent, 

        removeEvent:_removeEvent 

    } 

})(); 





K.util.event.domReady(function(){ 

    alert("dom ready!") 

})