Created
April 9, 2019 18:45
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Object array iteration - Javascript
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// Método Array#forEach | |
var miArray = [ 2, 4, 6, 8, 10 ]; | |
miArray.forEach( function(valor, indice, array) { | |
console.log("En el índice " + indice + " hay este valor: " + valor); | |
}); | |
// Método Object#keys combinado con Método Array#forEach | |
var obj = { | |
first: "John", | |
last: "Doe" | |
} | |
// ES6 | |
Object.keys(obj).forEach(key => console.log(key, obj[key])) | |
// ES5 | |
Object.keys(obj).forEach(function(key) { | |
console.log(key, obj[key]) | |
}) | |
// Bucle for-i | |
var miArray = [ 2, 4, 6, 8, 10 ]; | |
for (var i = 0; i < miArray.length; i+=1) { | |
console.log("En el índice '" + i + "' hay este valor: " + miArray[i]); | |
} | |
// Bucle for-in | |
var miArray = [ 2, 4, 6, 8, 10 ]; | |
for (var indice in miArray) { | |
console.log("En el índice '" + indice + "' hay este valor: " + miArray[indice]); | |
} | |
var miObjeto = { "marca":"audi", "edad":2 }; | |
for (var propiedad in miObjeto) { | |
if (miObjeto.hasOwnProperty(propiedad)) { | |
console.log("En la propiedad '" + propiedad + "' hay este valor: " + miObjeto[propiedad]); | |
} | |
} | |
// Bucle for-of | |
var miArray = [ 2, 4, 6, "hola", "mundo" ]; | |
for (var valor of miArray) { | |
console.log("Valor: " + valor); | |
} |
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