how to parseint integer in javascript code example

Example 1: javascript convert a number in string

const num = 123; //> type number 123
const str = num.toString(); //> type string "123"

Example 2: javascript string to a decimal

<script language="JavaScript" type="text/javascript">
var a = "3.3445";
var c = parseFloat(a);
alert(c);
</script>