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How to change font style and font weight in Javascript

Style fontWeight Property

1. Set the font weight for an element to "900": getElementById("demo"). style. fontWeight = "900";

2. A demonstration of possible values: var listValue = selectTag. options[selectTag. selectedIndex]. text; ...

3. Return the font weight of an element: getElementById("demo"). fontWeight);

Example 1

document.getElementById("demo").style.fontWeight = "900";

Example 2

<!DOCTYPE html>

		How to change font-weight of
		a text using JavaScript?

<body style="text-align: center;">

	<h1 style="color: green">

		How to change font-weight of
		<br>a text using JavaScript?

	<p id="sudo">Welcome to GeeksforGeeks</p>


	<button type="button" onclick="myGeeks()">
		Click to change

		function myGeeks() {
				.style.fontWeight = "bold";




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