Edit fiddle - JSFiddle - React, Tailwind, and code Playground

JSFiddle - React, Tailwind, and code Playground

JavaScript

//Implying we're logged in and there's no log in button in DOM

$("#logInButton").on("click", () => {
	alert("Hey!")
}); //Having this no error

document.querySelector("#logInButton").onclick = () => {
	alert("Hey!")
} //Error "Uncaught TypeError: Cannot set property 'onclick' of null"

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JSFiddle - React, Tailwind, and code Playground

JavaScript

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