Find HTML elements
Typically, with JavaScript, you need to manipulate HTML elements.
In order to do this, you must first find the element. There are three ways to do this:
- Find HTML element by id
- Find HTML elements by tag name
- Find HTML elements by class name
take a chestnut
Through document, you can find child elements by id, className, etc.
But in addition to document, other child elements can only be found through the following three methods
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