document.getElementById("")
时间: 2023-10-26 10:01:16 浏览: 43
document.getElementById("")是一种用于通过元素的唯一标识符(ID)来获取元素的方法。这个方法返回一个具有指定ID的元素。注意,getElementById()只能通过document对象调用,不能作为DOM中其他元素的方法。此外,getElementById()只能在文档中查找元素,无法获取在JavaScript中创建但未添加到文档中的元素。如果在getElementById()中传入一个不存在的ID,它将返回null。<span class="em">1</span><span class="em">2</span><span class="em">3</span>
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- *1* *3* [document.getElementById()](https://blog.csdn.net/modifier_/article/details/105400663)[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^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
- *2* [document.getElementById](https://blog.csdn.net/xx_yan/article/details/105159345)[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^v93^chatsearchT3_2"}}] [.reference_item style="max-width: 50%"]
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