focus和blur

回答: focus和blur是两个与元素焦点相关的事件。当元素获得焦点时，会触发focus事件；当元素失去焦点时，会触发blur事件。\[2\]这两个事件可以用于执行相应的函数或代码。focusin和focusout是focus和blur的替代方法，它们与focus和blur的区别在于能否在父元素上检测子元素获取或失去焦点的情况。\[1\]另外，需要注意的是，blur和focus事件不支持冒泡，而focusin和focusout事件支持冒泡。\[3\]要确定浏览器是否支持这些事件，可以使用相应的代码进行检测。
#### 引用[.reference_title]
- *1* *2* [Focus事件与blur事件](https://blog.csdn.net/kids_fan/article/details/123345441)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^koosearch_v1,239^v3^insert_chatgpt"}} ] [.reference_item]
- *3* [focus、focusin、blur、focusout的区别](https://blog.csdn.net/qq_43654065/article/details/120224028)[target="_blank" data-report-click={"spm":"1018.2226.3001.9630","extra":{"utm_source":"vip_chatgpt_common_search_pc_result","utm_medium":"distribute.pc_search_result.none-task-cask-2~all~insert_cask~default-1-null.142^v91^koosearch_v1,239^v3^insert_chatgpt"}} ] [.reference_item]
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