return elements that match specified CSS selector(s)

Can querySelectorAll() be used with IDs, classes, and tags?

Answers:

  • Yes, querySelectorAll() can be used with IDs, classes, and tags in JavaScript to select elements from the DOM. This method allows you to use CSS-style selectors to specify which elements you want to select.

    Here’s how you can use it for each type:

    1. By ID: Use the # symbol followed by the ID of the element.

      const element = document.querySelectorAll('#myId');

      This selects all elements with the ID myId. Note that IDs should be unique within a document, so typically, you'd expect only one element to be returned.

    2. By Class: Use the . symbol followed by the class name.

      const elements = document.querySelectorAll('.myClass');

      This selects all elements that have the class myClass.

    3. By Tag Name: Simply specify the tag name.

      const elements = document.querySelectorAll('div');

      This selects all <div> elements in the document.

    You can also combine these selectors in one call to select elements that meet multiple criteria. For example:

    const elements = document.querySelectorAll('div.myClass#myId');

    This selector retrieves all <div> elements having the class myClass and the ID myId.

    querySelectorAll() returns a NodeList, which is similar to an array, but you can iterate through it or convert it to an array if necessary.

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