O f T h e B e a s t = 6 6 6 i s D e v i l = t r u e v a r i s D e v i l , n u m b e r O f T h e B e a s t ; n u m b e r O f T h e B e a s t = 6 6 6 ; i s D e v i l = t r u e ;
O f T h e B e a s t = 6 6 6 i s D e v i l s N e i g h b o u r = t r u e n u m b e r O f T h e B e a s t = 6 6 7 i f i s D e v i l s N e i g h b o u r v a r i s D e v i l s N e i g h b o u r , n u m b e r O f T h e B e a s t ; n u m b e r O f T h e B e a s t = 6 6 6 ; i s D e v i l s N e i g h b o u r = t r u e ; i f ( i s D e v i l s N e i g h b o u r ) { n u m b e r O f T h e B e a s t = 6 6 7 ; }
' a l i v e ' a l e r t " I k n e w i t ! " i f e l v i s ? v a r e l v i s ; e l v i s = ' a l i v e ' ; i f ( e l v i s ! = n u l l ) { a l e r t ( " I k n e w i t ! " ) ; }
o o t : M a t h . s q r t s q u a r e : s q u a r e c u b e : ( x ) - > x * s q u a r e x m a t h = { r o o t : M a t h . s q r t , s q u a r e : s q u a r e , c u b e : f u n c t i o n ( x ) { r e t u r n x * s q u a r e ( x ) ; } } ;
1 , 2 , 3 , 4 , 5 ] c u b e s = ( m a t h . c u b e n u m f o r n u m i n l i s t ) v a r c u b e s , l i s t , n u m ; l i s t = [ 1 , 2 , 3 , 4 , 5 ] ; c u b e s = ( f u n c t i o n ( ) { v a r _ i , _ l e n , _ r e s u l t s ; _ r e s u l t s = [ ] ; f o r ( _ i = 0 , _ l e n = l i s t . l e n g t h ; _ i < _ l e n ; _ i + + ) { n u m = l i s t [ _ i ] ; _ r e s u l t s . p u s h ( m a t h . c u b e ( n u m ) ) ; } r e t u r n _ r e s u l t s ; } ) ( ) ;
2 , 3 3 , 4 2 , 5 5 , 4 ] r a c e = ( w i n n e r , r u n n e r s . . . ) - > c o n s o l e . l o g ( w i n n e r , r u n n e r s ) r a c e ( 4 , 5 , 2 2 , 3 3 , 4 2 , 5 5 , 4 ) v a r r a c e , _ _ s l i c e = [ ] . s l i c e ; r a c e = f u n c t i o n ( ) { v a r r u n n e r s , w i n n e r ; w i n n e r = a r g u m e n t s [ 0 ] , r u n n e r s = 2 < = a r g u m e n t s . l e n g t h ? _ _ s l i c e . c a l l ( a r g u m e n t s , 1 ) : [ ] ; r e t u r n c o n s o l e . l o g ( w i n n e r , r u n n e r s ) ; } ; r a c e ( 4 , 5 , 2 2 , 3 3 , 4 2 , 5 5 , 4 ) ;
JavaScript. Underneath all those awkward braces and semicolons, JavaScript has always had a gorgeous object model at its heart. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way. The golden rule of CoffeeScript is: "It's just JavaScript". The code compiles onetoone into the equivalent JS, and there is no interpretation at runtime. You can use any existing JavaScript library seamlessly from CoffeeScript (and viceversa). The compiled output is readable and prettyprinted, passes through JavaScript Lint without warnings, will work in every JavaScript runtime, and tends to run as fast or faster than the equivalent handwritten JavaScript. Latest Version: 1.4.0 Overview Overview CoffeeScript on the left, compiled JavaScript output on the right. # A s s i g n m e n t : n u m b e r = 4 2 o p p o s i t e = t r u e v a r c u b e s , l i s t , m a t h , n u m , n u m b e r , o p p o s i t e , r a c e , s _ _ s l i c e = [ ] . s l i c e ; n u m b e r = 4 2 ; TABLE OF CONTENTS TRY COFFEESCRIPT Run Link Link ANNOTATED SOURCE
e e [ o p t i o n s ] p a t h / t o / s c r i p t . c o f f e e - - [ a r g s ] I f c a l l e d w i t h o u t o p t i o n s , ` c o f f e e ` w i l l r u n y o u r s c r i p t . < / p r e > - b , - - b a r e c o m p i l e w i t h o u t a t o p - l e v e l f u n c t i o n w r a p p e r - c , - - c o m p i l e c o m p i l e t o J a v a S c r i p t a n d s a v e a s . j s f i l e s - e , - - e v a l p a s s a s t r i n g f r o m t h e c o m m a n d l i n e a s i n p u t - h , - - h e l p d i s p l a y t h i s h e l p m e s s a g e - i , - - i n t e r a c t i v e r u n a n i n t e r a c t i v e C o f f e e S c r i p t R E P L - j , - - j o i n c o n c a t e n a t e t h e s o u r c e C o f f e e S c r i p t b e f o r e c o m p i l i n g - l , - - l i n t p i p e t h e c o m p i l e d J a v a S c r i p t t h r o u g h J a v a S c r i p t L i n t - n , - - n o d e s p r i n t o u t t h e p a r s e t r e e t h a t t h e p a r s e r p r o d u c e s - - n o d e j s p a s s o p t i o n s d i r e c t l y t o t h e " n o d e " b i n a r y - o , - - o u t p u t s e t t h e o u t p u t d i r e c t o r y f o r c o m p i l e d J a v a S c r i p t - p , - - p r i n t p r i n t o u t t h e c o m p i l e d J a v a S c r i p t - r , - - r e q u i r e r e q u i r e a l i b r a r y b e f o r e e x e c u t i n g y o u r s c r i p t - s , - - s t d i o l i s t e n f o r a n d c o m p i l e s c r i p t s o v e r s t d i o - t , - - t o k e n s p r i n t o u t t h e t o k e n s t h a t t h e l e x e r / r e w r i t e r p r o d u c e - v , - - v e r s i o n d i s p l a y t h e v e r s i o n n u m b e r - w , - - w a t c h w a t c h s c r i p t s f o r c h a n g e s a n d r e r u n c o m m a n d s
a t c h - - c o m p i l e - o . . / . . / P u b l i c / J a v a S c r i p t * . c o f f e e c o f f e e - - j o i n S u b . j s - - c o m p i l e . . / . . / P u b l i c / J a v a S c r i p t / * . c o f f e e
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