Mercurial > js4py-pl
view core-javascript/javascript-exercises/answers/function-exercises.js @ 189:2e652f4b492f javascript-exercises
Add function-exercises.js - 'arguments'.
| author | jf3243 |
|---|---|
| date | Thu, 17 Nov 2011 17:25:29 +0000 |
| parents | 41c63d83ef49 |
| children | 6e302e558f09 |
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var something = null; TEST('return value', function() { var fn_1 = function(){ }; something = undefined; assert( fn_1() === something ); var fn_2 = function(){ // start return 42; // end }; something = undefined; assert( fn_2() === 42 ); }); TEST('parameters', function() { var something = null; var fn = function(a, b, c){ // start return b; // stop }; assert( fn(1, 2, 3) === 2 ); assert( fn(4, 5, 6) === 5 ); something = 8; assert( fn(7, 8) === something ); something = 10; assert( fn(9, 10, 11, 12) === something ); something = undefined; assert( fn(13) === something ); something = undefined; assert( fn() === something ); }); TEST('arguments', function() { var something = null; // 1 var fn_1 = function(){ return arguments.length; }; something = 0; assert( fn_1() === 0 ); something = 1; assert( fn_1(0) === something ); something = 2; assert( fn_1(0, 0) === something ); something = 3; assert( fn_1(0, 0, 0) === something ); // 2 var fn_2 = function(i){ return arguments[i]; }; something = 0; assert( fn_2(0) === something ); something = 1; assert( fn_2(1, 1, 2) === something ); something = 11; assert( fn_2(2, 10, 11) === something ); });
