From de5c456ebded0e038adbf23db34cc290c8829180 Mon Sep 17 00:00:00 2001 From: Florian Merz Date: Thu, 11 Feb 2021 14:49:24 +0100 Subject: unslug pl: move --- .../global_objects/string/repeat/index.html | 166 +++++++++++++++++++++ 1 file changed, 166 insertions(+) create mode 100644 files/pl/web/javascript/reference/global_objects/string/repeat/index.html (limited to 'files/pl/web/javascript/reference/global_objects/string/repeat') diff --git a/files/pl/web/javascript/reference/global_objects/string/repeat/index.html b/files/pl/web/javascript/reference/global_objects/string/repeat/index.html new file mode 100644 index 0000000000..76bf932753 --- /dev/null +++ b/files/pl/web/javascript/reference/global_objects/string/repeat/index.html @@ -0,0 +1,166 @@ +--- +title: String.prototype.repeat() +slug: Web/JavaScript/Referencje/Obiekty/String/repeat +translation_of: Web/JavaScript/Reference/Global_Objects/String/repeat +--- +
{{JSRef}}
+ +

The repeat() method constructs and returns a new string which contains the specified number of copies of the string on which it was called, concatenated together.

+ +

Składnia

+ +
str.repeat(count)
+ +

Parametry

+ +
+
count
+
An integer between 0 and +∞: [0, +∞), indicating the number of times to repeat the string in the newly-created string that is to be returned.
+
+ +

Zwracana wartość

+ +

A new string containing the specified number of copies of the given string.

+ +

Exceptions

+ + + +

Przykłady

+ +
'abc'.repeat(-1);   // RangeError
+'abc'.repeat(0);    // ''
+'abc'.repeat(1);    // 'abc'
+'abc'.repeat(2);    // 'abcabc'
+'abc'.repeat(3.5);  // 'abcabcabc' (count will be converted to integer)
+'abc'.repeat(1/0);  // RangeError
+
+({ toString: () => 'abc', repeat: String.prototype.repeat }).repeat(2);
+// 'abcabc' (repeat() is a generic method)
+
+ +

Polyfill

+ +

This method has been added to the ECMAScript 6 specification and may not be available in all JavaScript implementations yet. However, you can polyfill String.prototype.repeat() with the following snippet:

+ +
if (!String.prototype.repeat) {
+  String.prototype.repeat = function(count) {
+    'use strict';
+    if (this == null) {
+      throw new TypeError('can\'t convert ' + this + ' to object');
+    }
+    var str = '' + this;
+    count = +count;
+    if (count != count) {
+      count = 0;
+    }
+    if (count < 0) {
+      throw new RangeError('repeat count must be non-negative');
+    }
+    if (count == Infinity) {
+      throw new RangeError('repeat count must be less than infinity');
+    }
+    count = Math.floor(count);
+    if (str.length == 0 || count == 0) {
+      return '';
+    }
+    // Ensuring count is a 31-bit integer allows us to heavily optimize the
+    // main part. But anyway, most current (August 2014) browsers can't handle
+    // strings 1 << 28 chars or longer, so:
+    if (str.length * count >= 1 << 28) {
+      throw new RangeError('repeat count must not overflow maximum string size');
+    }
+    var rpt = '';
+    for (;;) {
+      if ((count & 1) == 1) {
+        rpt += str;
+      }
+      count >>>= 1;
+      if (count == 0) {
+        break;
+      }
+      str += str;
+    }
+    // Could we try:
+    // return Array(count + 1).join(this);
+    return rpt;
+  }
+}
+
+ +

Specifications

+ + + + + + + + + + + + + + + + + + + +
SpecificationStatusComment
{{SpecName('ES6', '#sec-string.prototype.repeat', 'String.prototype.repeat')}}{{Spec2('ES6')}}Initial definition.
{{SpecName('ESDraft', '#sec-string.prototype.repeat', 'String.prototype.repeat')}}{{Spec2('ESDraft')}} 
+ +

Browser compatibility

+ +
{{CompatibilityTable}}
+ +
+ + + + + + + + + + + + + + + + + + + +
FeatureChromeFirefox (Gecko)Internet ExplorerOperaSafari
Basic support{{CompatChrome("41")}} {{CompatGeckoDesktop("24")}}{{CompatNo}}{{CompatNo}}{{CompatSafari("9")}}
+
+ +
+ + + + + + + + + + + + + + + + + + + + + +
FeatureAndroidChrome for AndroidFirefox Mobile (Gecko)IE MobileOpera MobileSafari Mobile
Basic support{{CompatNo}}{{CompatChrome("36")}}{{CompatGeckoMobile("24")}}{{CompatNo}}{{CompatNo}}{{CompatNo}}
+
-- cgit v1.2.3-54-g00ecf