二、Dean Edward 所写的 addEvent() 函数 :http://dean.edwards.name/weblog/2005/10/add-event2/ functionaddEvent(element, type, handler) { if(!handler.$$guid) handler.$$guid=addEvent.guid++; if(!element.events) element.events={}; varhandlers=element.events[type]; if(!handlers) { handl...
*/varparentElement=targetElement.parentNode;//find parent elementif(parentElement.lastChild==targetElement)//To determime确定,下决心 whether the last element of the parent element is the same as the target element{parentElement.appendChild(newElement);}else{parentElement.insertBefore(newElement,targetE...
1functionaddEvent(el,name,fn){23if(el.addEventListener)returnel.addEventListener(name,fn,false);//在火狐中会执行这一句4returnel.attachEvent('on'+name,fn);//在ie中执行这一句5} 调用方法实现如下: 火狐实现页面已加载完就调用 1addEvent(document,"DOMContentLoaded",function(){2alert('测试测试')3}...
}el.attachEvent(‘on’+type, el[type+fn]);}elseel.addEventListener(type, fn, false);}addEvent(window, 'load', init);function init() {var odiv = document.getElementByIdx_x("divtest");addEvent(odiv, 'onmouseover', onmousefunc);addEvent(odiv, 'onclick', onclickfunc);add...
(http://domain.tld/image-02.png) no-repeat -9999px -9999px";document.getElementById("preload-03").style.background ="url(http://domain.tld/image-03.png) no-repeat -9999px -9999px";}}functionaddLoadEvent(func){varoldonload =window.onload;i...
const element = document.getElementById('.element-to-trigger-events'); element.addEventListener('customEvent', (event) => { console.log(`订阅者1收到了自定义事件:${event.detail}`); }); element.addEventListener('customEvent', (event) => { ...
(http://domain.tld/image-02.png) no-repeat -9999px -9999px";document.getElementById("preload-03").style.background="url(http://domain.tld/image-03.png) no-repeat -9999px -9999px";}}functionaddLoadEvent(func){varoldonload=window.onload;if(typeofwindow.onload!='function'){window....
So how do you make the event listener to work with the dynamic elements? You have 2 options to accomplish this task: 1. Set event listener to the dynamic element immediately after you add it Look at the following code: The code is identical with the first one except at line 19 and lin...
element, when it is 1, it is completely visible, and when it is 0, it is completely invisible?`Element is fully visible`:`Element is partially invisible`;});},{root:null,rootMargin:"0px 0px",threshold:1,// The threshold is set t...
第二次 Child.prototype = new Parent();创建父类实例作为子类原型,此时这个父类实例就又有了一份实例属性,但这份会被第一次拷贝来的实例属性屏蔽掉,所以多余。 代码语言:javascript 代码运行次数:0 运行 AI代码解释 functionParent(name){this.name=name;// 实例基本属性 (该属性,强调私有,不共享)this.arr=[...