Answer
ready() fires when DOM loads; onload waits for full page resources.
Quick Answer
$(document).ready(fn) fires when the DOM is fully parsed - HTML is loaded and elements are accessible, but images/stylesheets may still be loading. window.onload fires when the entire page (including images, stylesheets, iframes) has fully loaded. Use $(document).ready for most DOM manipulation - it's faster and you rarely need to wait for images.
S
SugharaIQ Editorial Team
Verified Answer
This answer has been peer-reviewed by industry experts holding senior engineering roles to ensure technical accuracy and relevance for modern interview standards.
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Source: SugharaIQ