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Use document.createElement("div") to make elements in code.
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innerText hides invisible text; textContent shows all.
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parent.appendChild(child) places an element inside another.
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alert("Hi!") displays a quick message to users.
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element.remove() takes an element off the page.
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Displays a text box for typing data.
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classList.toggle("active") adds/removes a CSS class.
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Shows an OK/Cancel pop-up for decisions.
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Attributes like src, href, or alt can be read or changed in JS.