Answers for "js font-family"

change font js

selector.style.fontFamily = "Times New Roman";

sans serif font family css

<style>
.sansserif {
font-family: Arial, Helvetica, sans-serif;
}
</style>

change font js

selector.style.fontFamily = "Times New Roman";

sans serif font family css

<style>
.sansserif {
font-family: Arial, Helvetica, sans-serif;
}
</style>