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document.querySelector("selector name") & document.querySelectorAll("selector name");

--> So this method is used in cases when you want to select the 1st elements our of many or if you want to select a particular element or a uinque element Note when we are using queryselector and we ...
GitHub

ikramuzzaman455173/Javascript-dom-cheatsheet

document.getElementById(id) - Selects an element by its ID. document.getElementsByClassName(className) - Selects elements by their class name. document.getElementsByTagName(tagName) - Selects elements ...