Assignment1.js

// convert integer to string; 10 -> "10"

var foo = 10;
undefined

foo.toString();
"10"

// convert string to integer; "10" -> 10
var swing = "10";
undefined

parseInt(swing);
10

// display integer with 3 decimal places; 10 -> 10.000

foo.toFixed(3);
"10.000"

or

foo.toPrecision(5);
"10.000"

perfect