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<
style
>
.
new-class
{
font-weight:
bold
;
color:
green
;
}
</
style
>
<
div
id=
"myDiv"
>Class manipulation</
div
>
<
script
>
document.getElementById(
"myDiv"
).classList.add(
"new-class"
);
</
script
>
<style> .new-class { font-weight: bold; color: green; } </style> <div id="myDiv">Class manipulation</div> <script> document.getElementById("myDiv").classList.add("new-class"); </script>