The vanilla equivalents.
✍️ 3 exercises + code challenge in this lessonToday's browsers support everything jQuery was created for. Knowing both helps when maintaining older projects:
$("#id") → document.querySelector("#id")$(".x").addClass("y") → document.querySelectorAll(".x").forEach(el => el.classList.add("y")).on("click", fn) → addEventListener("click", fn).text("hi") → textContent = "hi"$.getJSON(url) → fetch(url).then(r => r.json()).fadeIn() → CSS transitionsMastering jQuery vs Modern JavaScript helps you write clean and reliable jQuery code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.
<script src="https://code.jquery.com/jquery-3.7.1.min.js"></script>
<p id="a">jQuery</p>
<p id="b">Vanilla JS</p>
<script>
// jQuery
$("#a").css("color", "#0769AD").on("click", () => alert("jQuery click"));
// Same thing in modern JavaScript
const b = document.querySelector("#b");
b.style.color = "#EAB308";
b.addEventListener("click", () => alert("Vanilla click"));
</script>Check what you learned in “jQuery vs Modern JavaScript”.
The vanilla equivalent of $("#id").
document.("#id")
What is the vanilla equivalent of $.getJSON(url)?
Without jQuery, set the text of #out to "Vanilla!" using document.querySelector.
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