An in-depth analysis of the three methods of monitoring events in JavaScript_javascript skills

Events are the beating heart of JavaScript applications and the glue that holds everything together. Events occur when we perform certain types of interactions with web pages in the browser.

The first listening method, which is also the most commonly used method, is to load events directly on the code to produce effects:

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The second way to listen is to use the DOM to get the object and load the event:

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The third listening method is to use the standard addEventListener method and IE's private attachEvent method, because IE's attachEvent method is passed in parameters This problem is made a little more complicated due to defects:

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When binding multiple identical events, the first two methods will generate overrides, and the second The third method will execute multiple events at the same time.

The above is an in-depth analysis of the three methods of monitoring events in JavaScript_javascript skills. For more related content, please pay attention to the PHP Chinese website (www.php.cn)!