// Method - 1 ### parseInt() ###
var text = "42px";
var integer = parseInt(text, 10);
// returns 42
// Method - 2 ### parseFloat() ###
var text = "3.14someRandomStuff";
var pointNum = parseFloat(text);
// returns 3.14
// Method - 3 ### Number() ###
Number("123"); // returns 123
Number("12.3"); // returns 12.3
Number("3.14someRandomStuff"); // returns NaN
Number("42px"); // returns NaNlet string = "1";
let num = parseInt(string);
//num will equal 1 as a intvar myInt = parseInt("10.256"); //10
var myFloat = parseFloat("10.256"); //10.256var myString = "869.99"
var myFloat = parseFloat(myString)
var myInt = parseInt(myString)console.log(10+"1"); //101 both will be string
console.log(10-"1"); //9 string will be taken as number<script language="JavaScript" type="text/javascript">
var a = "3.3445";
var c = parseInt(a);
alert(c);
</script>