How to get breaks in the lines?

Question

Here is a code:
var x=5;
var y=10;
var temp=0;
document.write("A =" + x);
document.write(" B =" + y);
temp=x;

y=temp;
document.write(" After swap:");
document.write(" A=" + x);
document.write(" B=" + y);

Answer 1

document.write("A =" + x+"</br>");
....

Answer 2

You forgot to copy <y> to <x> without this swap won't work

temp = x;
x = y;
y = temp;