From 95aca4b4d8fa62815d4bd412fff1a364f842814a Mon Sep 17 00:00:00 2001 From: Ryan Johnson Date: Thu, 29 Apr 2021 16:16:42 -0700 Subject: remove retired locales (#699) --- .../global_objects/array/length/index.html | 129 --------------------- 1 file changed, 129 deletions(-) delete mode 100644 files/it/web/javascript/reference/global_objects/array/length/index.html (limited to 'files/it/web/javascript/reference/global_objects/array/length') diff --git a/files/it/web/javascript/reference/global_objects/array/length/index.html b/files/it/web/javascript/reference/global_objects/array/length/index.html deleted file mode 100644 index a36a6b5204..0000000000 --- a/files/it/web/javascript/reference/global_objects/array/length/index.html +++ /dev/null @@ -1,129 +0,0 @@ ---- -title: Array.length -slug: Web/JavaScript/Reference/Global_Objects/Array/length -translation_of: Web/JavaScript/Reference/Global_Objects/Array/length ---- -
{{JSRef}}
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La proprieta' length setta o restituisce il numero di elementi in un array. E' un intero a 32 bit, sempre maggiore del piu' grande indice dell'array.
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var items = ['shoes', 'shirts', 'socks', 'sweaters'];
-items.length;
-
-// returns 4
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Descrizione

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Puoi impostare la proprietà length di un array per troncare o estendere l'array stesso.

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var a = [1,2,3];
-a.length=2;
-// a is now [1, 2]
-
-a.length = 10
-// a is now [1, 2, undefined × 8]
-
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Esempi

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Iterare su un array

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Nel seguente esempio, l'array numbers viene iterarato e ciascun elemento viene moltiplicato per 2.

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var numbers = [1, 2, 3, 4, 5];
-var length = numbers.length;
-for (var i = 0; i < length; i++) {
-  numbers[i] *= 2;
-}
-// numbers is now [2, 4, 6, 8, 10]
-
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Specifiche

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SpecificheStatoCommento
{{SpecName('ES1')}}{{Spec2('ES1')}}Definizione iniziale.
{{SpecName('ES5.1', '#sec-15.4.5.2', 'Array.length')}}{{Spec2('ES5.1')}} 
{{SpecName('ES6', '#sec-properties-of-array-instances-length', 'Array.length')}}{{Spec2('ES6')}} 
{{SpecName('ESDraft', '#sec-properties-of-array-instances-length', 'Array.length')}}{{Spec2('ESDraft')}} 
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Compatibilità

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{{CompatibilityTable}}
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FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}
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FeatureAndroidChrome for AndroidFirefox Mobile (Gecko)IE MobileOpera MobileSafari Mobile
Basic support{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}{{CompatVersionUnknown}}
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