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3 changes: 2 additions & 1 deletion
3
...identifying_resources_on_the_web/index.md → ...identifying_resources_on_the_web/index.md
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53 changes: 53 additions & 0 deletions
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files/es/web/javascript/reference/global_objects/map/has/index.md
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| --- | ||
| title: Map.prototype.has() | ||
| slug: Web/JavaScript/Reference/Global_Objects/Map/has | ||
| l10n: | ||
| sourceCommit: 3cfd663738e9963157d90f359789d675a6662ec2 | ||
| --- | ||
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| {{JSRef}} | ||
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| El método **`has()`** de las instancias {{jsxref("Map")}} regresa un booleano indicando si un elemento con la llave especificada existe o no en este _map_. | ||
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| {{EmbedInteractiveExample("pages/js/map-prototype-has.html")}} | ||
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| ## Sintaxis | ||
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| ```js-nolint | ||
| has(key) | ||
| ``` | ||
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| ### Parámetros | ||
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| - `key` | ||
| - : La llave del elemento que se quiere comprobar si existe en el objeto `Map`. | ||
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| ### Valor devuelto | ||
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| `true` si un elemento con la llave especificada existe en el objeto `Map`; de lo contrario regresa `false`. | ||
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| ## Ejemplos | ||
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| ### Usando has() | ||
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| ```js | ||
| const myMap = new Map(); | ||
| myMap.set("bar", "foo"); | ||
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| console.log(myMap.has("bar")); // true | ||
| console.log(myMap.has("baz")); // false | ||
| ``` | ||
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| ## Especificaciones | ||
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| {{Specifications}} | ||
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| ## Compatibilidad con navegadores | ||
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| {{Compat}} | ||
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| ## Véase también | ||
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| - {{jsxref("Map")}} | ||
| - {{jsxref("Map.prototype.set()")}} | ||
| - {{jsxref("Map.prototype.get()")}} |
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files/es/web/javascript/reference/global_objects/map/keys/index.md
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,56 @@ | ||
| --- | ||
| title: Map.prototype.keys() | ||
| slug: Web/JavaScript/Reference/Global_Objects/Map/keys | ||
| l10n: | ||
| sourceCommit: 27180875516cc311342e74b596bfb589b7211e0c | ||
| --- | ||
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| {{JSRef}} | ||
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| El método **`keys()`** de las instancias {{jsxref("Map")}} regresa un nuevo objeto _[iterator de map](/es/docs/Web/JavaScript/Reference/Global_Objects/Iterator)_ que contiene las llaves para cada elemento en este _map_ en orden de inserción. | ||
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| {{EmbedInteractiveExample("pages/js/map-prototype-keys.html")}} | ||
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| ## Sintaxis | ||
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| ```js-nolint | ||
| keys() | ||
| ``` | ||
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| ### Parámetros | ||
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| Ningúno. | ||
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| ### Valor devuelto | ||
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| Un nuevo [objeto iterator iterable](/es/docs/Web/JavaScript/Reference/Global_Objects/Iterator). | ||
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| ## Ejemplos | ||
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| ### Usando keys() | ||
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| ```js | ||
| const myMap = new Map(); | ||
| myMap.set("0", "foo"); | ||
| myMap.set(1, "bar"); | ||
| myMap.set({}, "baz"); | ||
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| const mapIter = myMap.keys(); | ||
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| console.log(mapIter.next().value); // "0" | ||
| console.log(mapIter.next().value); // 1 | ||
| console.log(mapIter.next().value); // {} | ||
| ``` | ||
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| ## Especificaciones | ||
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| {{Specifications}} | ||
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| ## Compatibilidad con navegadores | ||
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| {{Compat}} | ||
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| ## Véase también | ||
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| - {{jsxref("Map.prototype.entries()")}} | ||
| - {{jsxref("Map.prototype.values()")}} |
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files/es/web/javascript/reference/global_objects/map/set/index.md
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| --- | ||
| title: Map.prototype.set() | ||
| slug: Web/JavaScript/Reference/Global_Objects/Map/set | ||
| l10n: | ||
| sourceCommit: 3cfd663738e9963157d90f359789d675a6662ec2 | ||
| --- | ||
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| {{JSRef}} | ||
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| El método **`set()`** de las instancias {{jsxref("Map")}} agrega o actualiza una entrada en este _map_ con la llave y valor especificados. | ||
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| {{EmbedInteractiveExample("pages/js/map-prototype-set.html")}} | ||
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| ## Sintaxis | ||
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| ```js-nolint | ||
| set(key, value) | ||
| ``` | ||
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| ### Parámetros | ||
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| - `key` | ||
| - : La llave del elemento que se va a agregar al objeto `Map`. La llave puede ser cualquiera de los [tipos de dato de JavaScript](/es/docs/Web/JavaScript/Data_structures) (cualquier [valor primitivo](/es/docs/Web/JavaScript/Data_structures#valores_primitivos) o cualquier tipo de [objeto JavaScript](/es/docs/Web/JavaScript/Data_structures#objetos)). | ||
| - `value` | ||
| - : El valor de el elemento que se va a agregar al objeto `Map`. El valor puede ser cualquiera de los [tipos de dato de JavaScript](/es/docs/Web/JavaScript/Data_structures) (cualquier [valor primitivo](/es/docs/Web/JavaScript/Data_structures#valores_primitivos) o cualquier tipo de [objeto JavaScript](/es/docs/Web/JavaScript/Data_structures#objetos)). | ||
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| ### Valor devuelto | ||
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| El objeto `Map`. | ||
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| ## Ejemplos | ||
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| ### Usando set() | ||
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| ```js | ||
| const myMap = new Map(); | ||
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| // Agrega nuevos elementos a el map | ||
| myMap.set("bar", "foo"); | ||
| myMap.set(1, "foobar"); | ||
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| // Actualiza un elemento en el map | ||
| myMap.set("bar", "baz"); | ||
| ``` | ||
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| ### Usando set() encadenandolo | ||
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| Ya que el método `set()` regresa el mismo objeto `Map`, puedes encadenar la llamada al método como se muestra acontinuación: | ||
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| ```js | ||
| // Agrega nuevos elementos al map, encadenando las llamadas. | ||
| myMap.set("bar", "foo").set(1, "foobar").set(2, "baz"); | ||
| ``` | ||
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| ## Especificaciones | ||
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| {{Specifications}} | ||
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| ## Compatibilidad con navegadores | ||
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| {{Compat}} | ||
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| ## Véase también | ||
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| - {{jsxref("Map")}} | ||
| - {{jsxref("Map.prototype.get()")}} | ||
| - {{jsxref("Map.prototype.has()")}} |
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files/es/web/javascript/reference/global_objects/map/size/index.md
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| --- | ||
| title: Map.prototype.size | ||
| slug: Web/JavaScript/Reference/Global_Objects/Map/size | ||
| l10n: | ||
| sourceCommit: 6a0f9553932823cd0c4dcf695d4b4813474964fb | ||
| --- | ||
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| {{JSRef}} | ||
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| La propiedad de acceso **`size`** de las instancias {{jsxref("Map")}} regresa el número de elementos de este _map_. | ||
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| {{EmbedInteractiveExample("pages/js/map-prototype-size.html")}} | ||
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| ## Descripción | ||
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| El valor de `size` es un entero que representa, el número de entradas que el objeto `Map` tiene. La función de acceso para `size` es `undefined`; no puedes modificar esta propiedad. | ||
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| ## Ejemplos | ||
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| ### Usando size | ||
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| ```js | ||
| const myMap = new Map(); | ||
| myMap.set("a", "alpha"); | ||
| myMap.set("b", "beta"); | ||
| myMap.set("g", "gamma"); | ||
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| console.log(myMap.size); // 3 | ||
| ``` | ||
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| ## Especificaciones | ||
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| {{Specifications}} | ||
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| ## Compatibilidad con nvegadores | ||
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| {{Compat}} | ||
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| ## Véase también | ||
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| - {{jsxref("Map")}} |
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files/es/web/javascript/reference/global_objects/map/symbol.iterator/index.md
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| --- | ||
| title: Map.prototype[Symbol.iterator]() | ||
| slug: Web/JavaScript/Reference/Global_Objects/Map/Symbol.iterator | ||
| l10n: | ||
| sourceCommit: 6fbdb78c1362fae31fbd545f4b2d9c51987a6bca | ||
| --- | ||
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| {{JSRef}} | ||
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| El método **`[Symbol.iterator]()`** de las instancias {{jsxref("Map")}} implementa el [protocolo de iteración](/es/docs/Web/JavaScript/Reference/Iteration_protocols) y permite a los objetos `Map` ser consumidos por la mayoría de sintaxis que esperan iterables, como lo es, la [sintaxis spread](/es/docs/Web/JavaScript/Reference/Operators/Spread_syntax) y el bucle {{jsxref("Statements/for...of", "for...of")}}. Este método regresa un [objeto iterator de map](/es/docs/Web/JavaScript/Reference/Global_Objects/Iterator) que produce tuplas llave-valor del _map_ en orden de inserción. | ||
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| El valor inicial de esta propiedad, es el mismo objeto de función que el valor inicial de la propiedad {{jsxref("Map.prototype.entries")}}. | ||
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| {{EmbedInteractiveExample("pages/js/map-prototype-@@iterator.html")}} | ||
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| ## Sintaxis | ||
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| ```js-nolint | ||
| map[Symbol.iterator]() | ||
| ``` | ||
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| ### Parámetros | ||
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| Ningúno. | ||
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| ### Valor devuelto | ||
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| El mismo valor devuelto que {{jsxref("Map.prototype.entries()")}}: un nuevo [objeto iterator iterable](/es/docs/Web/JavaScript/Reference/Global_Objects/Iterator) que produce tuplas llave-valor del _map_. | ||
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| ## Ejemplo | ||
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| ### Iteración usando el bucle for...of | ||
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| Note que raramente necesitará llamar este método directamente. La existencia de el método `[Symbol.iterator]()` hace a los objetos `Map` [iterables](/es/docs/Web/JavaScript/Reference/Iteration_protocols#el_protocolo_iterable), y sintaxis de iteracion como lo és el bucle `for...of` automáticamente llama a este método para obtener el iterador que se usará para iterar sobre el objeto. | ||
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| ```js | ||
| const myMap = new Map(); | ||
| myMap.set("0", "foo"); | ||
| myMap.set(1, "bar"); | ||
| myMap.set({}, "baz"); | ||
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| for (const entry of myMap) { | ||
| console.log(entry); | ||
| } | ||
| // ["0", "foo"] | ||
| // [1, "bar"] | ||
| // [{}, "baz"] | ||
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| for (const [key, value] of myMap) { | ||
| console.log(`${key}: ${value}`); | ||
| } | ||
| // 0: foo | ||
| // 1: bar | ||
| // [Object]: baz | ||
| ``` | ||
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| ### Manualmente moviendo el iterador | ||
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| Puedes llamar manualmente el método `next()` del objeto iterator para tener máximo control sobre el proceso de iteración. | ||
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| ```js | ||
| const myMap = new Map(); | ||
| myMap.set("0", "foo"); | ||
| myMap.set(1, "bar"); | ||
| myMap.set({}, "baz"); | ||
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| const mapIter = myMap[Symbol.iterator](); | ||
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| console.log(mapIter.next().value); // ["0", "foo"] | ||
| console.log(mapIter.next().value); // [1, "bar"] | ||
| console.log(mapIter.next().value); // [Object, "baz"] | ||
| ``` | ||
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| ## Especificaciones | ||
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| {{Specifications}} | ||
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| ## Compatibilidad con navegadores | ||
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| {{Compat}} | ||
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| ## Véase también | ||
|
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| - {{jsxref("Map")}} | ||
| - {{jsxref("Map.prototype.entries()")}} | ||
| - {{jsxref("Map.prototype.keys()")}} | ||
| - {{jsxref("Map.prototype.values()")}} | ||
| - {{jsxref("Symbol.iterator")}} | ||
| - [Protocolos de Iteración](/es/docs/Web/JavaScript/Reference/Iteration_protocols) |
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...ing_between_www_and_non-www_urls/index.md → ...ing_between_www_and_non-www_urls/index.md
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