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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 ...
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[JavaScript] Basic Strategy for DOM Manipulation: Element Retrieval and Manipulation with querySelector

The complete source code, a demonstration of the server monitoring dashboard implementation, and detailed explanations are available in the following blog post. [JavaScript] Basic Strategy for DOM ...
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Rebane on X: "its kind of crazy how document.getElementById("foo") and document.querySelector("#foo") are the same length"

That’s why you use the global foo that gets created with every id’ed element ...