I am building a dynamic dashboard and I need to trigger an initialization function—like fetching data or setting up event listeners—as soon as the page is ready. I’ve tried using the onload attribute in the <body> tag, but it feels outdated and clutters my HTML. Is there a more modern way to do this using pure JavaScript (Vanilla JS) or a specific React hook? I want to ensure the DOM is fully constructed before the function runs to avoid "null" reference errors when accessing elements.
3 answers
Don't forget that you can also simply place your <script> tag at the very bottom of the <body>. In modern browsers, using the defer attribute in your script tag in the <head> achieves the same non-blocking result without needing an explicit event listener!
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I agree with Jennifer. Using