You might come across a situation wherein you need to perform some mathematical operations on the data entered by the user. Be it addition, subtraction , multiplication or division, you can do these calculations using Javascript easily.
Since all the variables in JavaScript are declared using ‘var’ as a datatype, we need to use a function to tell Javascript to treat the contents of the variable as a number on which calculations have to be performed.
All you need to do is to use the ‘Number()’ function.
The example below will make things clear for you :
var a = “5″;
var b = “5″;
var result = a + b;
alert(“The result is “+result); // This will give you an output of 55 and not 10.
var calculatedResult = Number(a) + Number(b);
alert(“The mathematical result is “+calculatedResult); //This will give the result as 10.