<!DOCTYPE html>
<html>
<head>
<title>Title of the document</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.0/jquery.min.js"></script>
</head>
<body>
<input type='radio' id='radio1' name='type' value='1'>Value1 </input>
<input type='radio' id='radio2' name='type' value='2'>Value2 </input>
<input type='radio' id='radio3' name='type' value='3'> Value3 </input>
<script>
$(document).ready(function() {
$("#radio1").prop("checked", true);
});
</script>
</body>
</html>