{ case 'click': // some code here... break; case 'dblclick': // some code here... break; } }; // Note that the listeners in this case are this, not this.handleEvent element.addEventListener('click', this, false); element.addEventListener('dblclick', this, false); // You can ...
This is particularly useful for libraries, JavaScript modules, or any other kind of code that needs to work well with other libraries or extensions. In contrast to using an onXYZ property, it gives you finer-grained control of the phase when the listener is activated (capturing vs. bubbling)...
See DOM Level 3 Events and JavaScript Event order for a detailed explanation. If not specified, useCapture defaults to false. Note: For event listeners attached to the event target, the event is in the target phase, rather than the capturing and bubbling phases. Event listeners in the ...
eventType(target,'touchend',this); 谷歌之,MDN上就有相关介绍,嘿嘿 关于第二个参数 listener, 有下面一句话: listenerThe object that receives a notification when an event of the specified type occurs. This must be an object implementing theEventListenerinterface, or simply a JavaScriptfunction. 四级...
if (!('isIntersecting' in window.IntersectionObserverEntry.prototype)) { Object.defineProperty(window.IntersectionObserverEntry.prototype, 'isIntersecting', { get: function () { return this.intersectionRatio > 0 } }) } return true } return false} 赏 谢谢你请我吃糖果 前端...
BCD tables only load in the browser 该页面上的浏览器兼容性数据是来自已收集的数据。可以通过给https://github.com/mdn/browser-compat-data提PR的方式贡献新的数据。 相关链接 EventTarget.removeEventListener() Creating and triggering custom events More details on the use of this in event handlers ...
('Element'inwin)win.Element.prototype.addEventListener=addEvent;//IE8else{//IE < 8doc.attachEvent('onreadystatechange',function(){addListen(doc.all)});//Make sure we also init at domReadydocHijack('getElementsByTagName');docHijack('getElementById');docHijack('createElement');addListen(doc....
{ case 'click': // some code here... break; case 'dblclick': // some code here... break; } }; // Note that the listeners in this case are this, not this.handleEvent element.addEventListener('click', this, false); element.addEventListener('dblclick', this, false); // You can ...
See DOM Level 3 Events and JavaScript Event order for a detailed explanation. If not specified, useCapture defaults to false. Note: For event listeners attached to the event target, the event is in the target phase, rather than the capturing and bubbling phases. Event listeners in the ...