convert variable to number javascript code example

Example 1: javascript convert string to number or integer

//It accepts two arguments. 
//The first argument is the string to convert. 
//The second argument is called the radix. This is the base number used in mathematical systems. For our use, it should always be 10.


var text = '42px';
var integer = parseInt(text, 10);


// returns 42

Example 2: javascript string to integer

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

Example 3: string to number js

let myNumber = Number("5.25"); //5.25

Example 4: javascript convert string to number

var myInt = parseInt("10.256"); //10
var myFloat = parseFloat("10.256"); //10.256

Example 5: javascript to number

parseInt("1")