What is the function of a Closure Compiler?
A
Originates the JavaScript
B
Compiles the JavaScript
C
Rewrites JavaScript
D
Links the JavaScript
Correct Answer: Rewrites JavaScript
The Closure Compiler is a tool for making JavaScript download and runs faster. Instead of compiling from a source language to machine code, it compiles from JavaScript to better JavaScript. Closure Compiler runs through a number of “scorched-earth” optimizations—it unfurls functions, rewrites variable names, and removes functions that are never called (as far as it can tell).