Created
February 21, 2017 17:00
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Variables y Tipos de Datos JS
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/* | |
* Reglas de nomenclatura de archivos: | |
* | |
* 1. No espacios en los nombres (ej: hola mundo -> malo!) | |
* 2. Mezcla de mayúsculas en los nombres (ej: HolaMundo -> malo!) | |
*/ | |
var variableString = "Hola q' tal?"; | |
// var variableNumber = 3; | |
// var variableNumber = 3.8976; | |
// var variableNumber = NaN; | |
var variableNumber = Infinity; | |
// alert(typeof variableNumber); | |
// var variableBoolean = true; | |
var variableBoolean = false; | |
// alert(typeof variableBoolean); | |
var variable; | |
// alert(typeof variable); | |
var variableNula = null; | |
// alert(typeof variableNula); | |
var variableObjeto = { | |
nombre: "Ivan", | |
apellidos: "Medina Díaz" | |
}; | |
// alert(typeof variableObjeto); | |
// console.log(variableObjeto); | |
// console.log(variableObjeto.nombre); | |
// console.log(variableObjeto["apellidos"]); | |
// console.log(variableObjeto["nombre"] + " " + variableObjeto["apellidos"]); | |
// console.log(variableObjeto.nombre + " " + variableObjeto.apellidos); | |
var variableArreglo = ["Noemi", "Nancy", "Rocío", 3, 4, 5, 2.12345, true, false, [1,2], { marca: "Samsung", modelo: "Galaxy Note 7" }]; | |
alert(typeof variableArreglo); | |
console.log(variableArreglo); | |
console.log(variableArreglo[0]); | |
console.log(variableArreglo[1]); | |
console.log(variableArreglo[2]); | |
console.log(variableArreglo[3]); | |
var objeto = variableArreglo[10]; | |
console.log(objeto["marca"]); | |
variableArreglo.push("elemento 11"); | |
console.log(variableArreglo); | |
variableArreglo.pop(); | |
console.log(variableArreglo); |
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