When we write the code below in the Firefox web browser bookmark, the result 3
is written to the body
of the current page:
javascript:
var x = 2;
x += 1;
To avoid this, it is possible to add var
before a new variable called y
that takes the value of x
:
javascript:
var x = 2;
var y = x += 1;
My code has dozens of variables and it wouldn't be practical to have to create other variables just to avoid the problem.
How can I prevent variable values from being written to the document.body
of the page?