JAVASCRIPT
Retrieve an Element's Resolved Computed CSS Styles
Discover how to get the final, resolved CSS property values for any DOM element, including inherited and calculated styles, using `window.getComputedStyle()`.
const element = document.getElementById('myElement');
const computedStyle = window.getComputedStyle(element);
// Get a specific computed property
const displayValue = computedStyle.getPropertyValue('display');
console.log(`Display: ${displayValue}`); // e.g., "block"
// Or access directly as a property (camelCase for CSS properties)
const fontSize = computedStyle.fontSize;
console.log(`Font Size: ${fontSize}`); // e.g., "16px"
// Iterate over all computed styles (less common, but possible)
for (let i = 0; i < computedStyle.length; i++) {
const propName = computedStyle[i];
const propValue = computedStyle.getPropertyValue(propName);
// console.log(`${propName}: ${propValue}`);
}
How it works: The `window.getComputedStyle()` method returns an object containing the final computed values of all CSS properties for an element, as they are rendered by the browser. This is different from `element.style`, which only accesses inline styles. It's invaluable for debugging, dynamically adjusting layouts based on current styles, or performing calculations that depend on an element's rendered dimensions or appearance.