要设置字体系列，请使用JavaScript中的fontFamily属性。
您可以尝试运行以下代码以使用JavaScript为文本设置字体系列-
<!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</button>
<script>
function display() {
document.getElementById("myID").style.fontFamily = "verdana,sans-serif";
}
</script>
</body>
</html>