JavaScript - Tostring() Vs. Tonumber() Vs. Valueof()

I'm average when it comes to math so I'm having trouble understanding the concept of how you convert an integer to a string, and what would be the best outcome? Can someone help me understand the toString() method please?

Hi,

I was looking at this code from another thread (code by Old Pendant)

<script type = "text/javascript">
// constructor for a Car ojbect:
function Car( reg, make, vin )
{
this.registration = reg;
this.manufacturer = make;
this.VIN = vin;
this.toString = function() {
return "\nregistraion: " + this.registration
+ ", make: " + this.manufacturer
+ ", vin: " + this.VIN; };
}

// Purpose: Gather car information and store it in a datbase
// Ask user for REG info, CAR MAKE, car VIN
var howMany = prompt("Enter details for how many cars?", "");

var cars = [];

for (var i = 1; i <=howMany; i++) {
var r = prompt ("Enter Registration Number for car No." + i,"");
var m = prompt ("Enter Car Make for car No." + i,"");
var v = prompt ("Enter Car VIN Number for car No." + i,"");
cars.push( new Car( r, m, v ) );
}

alert( cars );
</script>

What I want to know is what this.tostring = function () does? And if this can be removed because with this there I can't put the code into a bigger function.

I hope that has made some kind of sense, any help is appreciated...

I have the following code as shown below:

Code:

<script type="text/javascript">
var a = 12;
var b = 35;
var c = 56;

document.write(a.toString(36).toUpperCase() + "<br>");
document.write(b.toString(36).toUpperCase() + "<br>");
document.write(c.toString(36).toUpperCase() + "<br>");
</script>

The problem right now is that for the first 36 number, it always miss the 'prefix 0'.

From the code above, it will return the following:
Code:

C
Z
1K

My intention was to have all of them display in two character format, as shown below:
Code:

0C
0Z
1K

May I know how should I do it without having to use if (a < 36) else ... statement?