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Question

JavaScript numbers are always stored as double precision floating point numbers.

Answer 1

I think you'll find the answer here:
http://www.informit.com/articles/article.aspx?p=1997934&seqNum=2

Answer 2

thanks to all

Answer 3

JavaScript has dynamic types. This means that the same variable can be used to hold different data types.

var x;               // Now x is undefined
var x = 5;           // Now x is a Number
var x = "John";      // Now x is a String

The Java programming language is statically-typed, which means that all variables must first be declared before they can be used.

int x = 5; //String x = "John";

Answer 4

what