摘要：
Event Listeners The addEventListener() method attaches an event handler to an element without overwriting existing event handlers.You can add many eve 阅读全文
摘要：
Handling Events There are several ways to handle events, including the following.Write the code directly into the HTML. <button onclick="alert('This i 阅读全文
摘要：
DOM Events HTML DOM allows JavaScript to react to HTML events. A JavaScript can be executed when an event occurs, such as when a user clicks on an HTM 阅读全文