Using querySelector and querySelectorAll
Modern JavaScript provides powerful methods for selecting elements from the DOM using CSS selectors. The querySelector method allows you to select the first element that matches a given CSS selector, while querySelectorAll returns a static NodeList of all elements matching the selector. CSS selector syntax lets you target elements by tag, class, ID, attribute, or even hierarchical relationships. For example, "div", .item, and #header select elements by tag, class, and ID, respectively. You can also use more complex selectors like "ul li.active" to find all li elements with the class active inside a ul. These methods give you flexibility and precision when working with the DOM.
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Can you give more examples of CSS selectors I can use with querySelector?
How do I use querySelector and querySelectorAll in JavaScript code?
What is the difference between querySelector and getElementById?
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Completion rate improved to 6.67Using querySelector and querySelectorAll
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Modern JavaScript provides powerful methods for selecting elements from the DOM using CSS selectors. The querySelector method allows you to select the first element that matches a given CSS selector, while querySelectorAll returns a static NodeList of all elements matching the selector. CSS selector syntax lets you target elements by tag, class, ID, attribute, or even hierarchical relationships. For example, "div", .item, and #header select elements by tag, class, and ID, respectively. You can also use more complex selectors like "ul li.active" to find all li elements with the class active inside a ul. These methods give you flexibility and precision when working with the DOM.
index.html
style.css
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