若要设置字体的样式，请使用fontStyle属性。您可以尝试运行以下代码，以使用JavaScript将字体的样式设置为正常，斜体或倾斜-
<!DOCTYPE html>
<html>
<body>
<h1>Heading 1</h1>
<p id="myID">
This is Demo Text. This is Demo Text. This is Demo Text. This is Demo Text.
This is Demo Text. This is Demo Text. This is Demo Text. This is Demo Text.
</p>
<button type="button" onclick="display()">Set Font Family and Style</button>
<script>
function display() {
document.getElementById("myID").style.fontFamily = "verdana,sans-serif";
document.getElementById("myID").style.fontStyle = "italic";
}
</script>
</body>
</html>