Created
August 22, 2011 17:57
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v.1/Ejercicio 4/Reunión #4/Grupo de Estudio JavaScript
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| var _STRING = "string", _ARRAY = "array", _HELLO = "Hola", _SPACE = " "; | |
| function toType(obj) { | |
| //return ({}).toString.call(obj).match(/\s([a-z|A-Z]+)/)[1].toLowerCase(); | |
| //Expresión regular mejorada | |
| //return ({}).toString.call(obj).match(/\s([a-zA-Z]+)/)[1].toLowerCase(); | |
| // Usando el "slice" | |
| return ({}).toString.call(obj).slice(8,-1).toLowerCase(); | |
| } | |
| function isArray(input) { | |
| return toType(input) === _ARRAY; | |
| } | |
| function isString(input) { | |
| return toType(input) === _STRING; | |
| } | |
| function convertString(input) { | |
| (toType(input) === _STRING && (input = input.trim())) || (input = ""); | |
| return input; | |
| } | |
| function getNamesFromArray(input) { | |
| var names = [], | |
| namesMaxLen = input.length, | |
| item, | |
| current; | |
| for (item = namesMaxLen; item > 0; --item) { | |
| current = input[namesMaxLen - item]; | |
| if (isString(current)) { | |
| names.push(current); | |
| } else if (isArray(current)) { | |
| names = names.concat(getNamesFromArray(current)); | |
| } | |
| } | |
| return names; | |
| } | |
| var crearSaludo = function(input) { | |
| var result, | |
| current, | |
| names, | |
| namesMaxLen, | |
| subNamesMaxLen, | |
| item, | |
| subItem, | |
| funcSaludo; | |
| var saludo = function() { | |
| current = convertString(input); | |
| if (current.length > 0) { | |
| result = _HELLO + _SPACE + current; | |
| } | |
| return result; | |
| }; | |
| if (isArray(input)) { | |
| funcSaludo = [], names = [], namesMaxLen = input.length; | |
| for (item = namesMaxLen; item > 0; --item) { | |
| current = input[namesMaxLen - item]; | |
| if (isString(current)) { | |
| funcSaludo.push(crearSaludo(current)); | |
| } else if (isArray(current)) { | |
| names = getNamesFromArray(current); | |
| subNamesMaxLen = names.length; | |
| for (subItem = subNamesMaxLen; subItem > 0; --subItem) { | |
| funcSaludo.push(crearSaludo(names[subNamesMaxLen - subItem])); | |
| } | |
| } | |
| } | |
| } else { | |
| funcSaludo = saludo; | |
| } | |
| return funcSaludo; | |
| }; |
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Por cierto los paréntesis son innecesarios como puedes ver.