What is the output of this code? Why is it so?

Question

var price = 55.55;
document.write(price);
price = "hell man";
var price;
document.write(price)

Answer 1

I assume you're using javascript. First of all it's not common to declear a variable twice. I would suggest to delete row no. 4: 'var price;' The result is the same anyway.
In other languages like java or c++ the data type of a variable is very static but in javascript the compiler asigns a new data type every time you asign a new value.

The output is simply the result of writing the first value and then the second:

Output: 55.55hell man