From 037a4118c4324d39fdef8bd23f9dd21b02f50946 Mon Sep 17 00:00:00 2001 From: Peter Bengtsson Date: Thu, 15 Jul 2021 13:01:50 -0400 Subject: delete pages that were never translated from en-US (pl, part 1) (#1549) --- .../global_objects/string/fromcodepoint/index.html | 148 --------------------- 1 file changed, 148 deletions(-) delete mode 100644 files/pl/web/javascript/reference/global_objects/string/fromcodepoint/index.html (limited to 'files/pl/web/javascript/reference/global_objects/string/fromcodepoint/index.html') diff --git a/files/pl/web/javascript/reference/global_objects/string/fromcodepoint/index.html b/files/pl/web/javascript/reference/global_objects/string/fromcodepoint/index.html deleted file mode 100644 index 0a3bacc072..0000000000 --- a/files/pl/web/javascript/reference/global_objects/string/fromcodepoint/index.html +++ /dev/null @@ -1,148 +0,0 @@ ---- -title: String.fromCodePoint() -slug: Web/JavaScript/Reference/Global_Objects/String/fromCodePoint -translation_of: Web/JavaScript/Reference/Global_Objects/String/fromCodePoint -original_slug: Web/JavaScript/Referencje/Obiekty/String/fromCodePoint ---- -
{{JSRef}}
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The static String.fromCodePoint() method returns a string created by using the specified sequence of code points.

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{{EmbedInteractiveExample("pages/js/string-fromcodepoint.html","shorter")}}
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Syntax

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String.fromCodePoint(num1[, ...[, numN]])
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Parameters

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num1, ..., numN
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A sequence of code points.
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Return value

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A string created by using the specified sequence of code points.

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Exceptions

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Description

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This method returns a string (and not a {{jsxref("String")}} object).

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Because fromCodePoint() is a static method of {{jsxref("String")}}, you must call it as String.fromCodePoint(), rather than as a method of a {{jsxref("String")}} object you created.

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Polyfill

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The String.fromCodePoint() method has been added to ECMAScript 2015 and may not be supported in all web browsers or environments yet.

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Use the code below for a polyfill:

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if (!String.fromCodePoint) (function(stringFromCharCode) {
-    var fromCodePoint = function(_) {
-      var codeUnits = [], codeLen = 0, result = "";
-      for (var index=0, len = arguments.length; index !== len; ++index) {
-        var codePoint = +arguments[index];
-        // correctly handles all cases including `NaN`, `-Infinity`, `+Infinity`
-        // The surrounding `!(...)` is required to correctly handle `NaN` cases
-        // The (codePoint>>>0) === codePoint clause handles decimals and negatives
-        if (!(codePoint < 0x10FFFF && (codePoint>>>0) === codePoint))
-          throw RangeError("Invalid code point: " + codePoint);
-        if (codePoint <= 0xFFFF) { // BMP code point
-          codeLen = codeUnits.push(codePoint);
-        } else { // Astral code point; split in surrogate halves
-          // https://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
-          codePoint -= 0x10000;
-          codeLen = codeUnits.push(
-            (codePoint >> 10) + 0xD800,  // highSurrogate
-            (codePoint % 0x400) + 0xDC00 // lowSurrogate
-          );
-        }
-        if (codeLen >= 0x3fff) {
-          result += stringFromCharCode.apply(null, codeUnits);
-          codeUnits.length = 0;
-        }
-      }
-      return result + stringFromCharCode.apply(null, codeUnits);
-    };
-    try { // IE 8 only supports `Object.defineProperty` on DOM elements
-      Object.defineProperty(String, "fromCodePoint", {
-        "value": fromCodePoint, "configurable": true, "writable": true
-      });
-    } catch(e) {
-      String.fromCodePoint = fromCodePoint;
-    }
-}(String.fromCharCode));
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Examples

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Using fromCodePoint()

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Valid input:

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String.fromCodePoint(42);       // "*"
-String.fromCodePoint(65, 90);   // "AZ"
-String.fromCodePoint(0x404);    // "\u0404" == "Є"
-String.fromCodePoint(0x2F804);  // "\uD87E\uDC04"
-String.fromCodePoint(194564);   // "\uD87E\uDC04"
-String.fromCodePoint(0x1D306, 0x61, 0x1D307); // "\uD834\uDF06a\uD834\uDF07"
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Invalid input:

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String.fromCodePoint('_');      // RangeError
-String.fromCodePoint(Infinity); // RangeError
-String.fromCodePoint(-1);       // RangeError
-String.fromCodePoint(3.14);     // RangeError
-String.fromCodePoint(3e-2);     // RangeError
-String.fromCodePoint(NaN);      // RangeError
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Compared to fromCharCode()

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{{jsxref("String.fromCharCode()")}} cannot return supplementary characters (i.e. code points 0x010000 – 0x10FFFF) by specifying their code point. Instead, it requires the UTF-16 surrogate pair in order to return a supplementary character:

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String.fromCharCode(0xD83C, 0xDF03); // Code Point U+1F303 "Night with
-String.fromCharCode(55356, 57091);   // Stars" == "\uD83C\uDF03"
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String.fromCodePoint(), on the other hand, can return 4-byte supplementary characters, as well as the more common 2-byte BMP characters, by specifying their code point (which is equivalent to the UTF-32 code unit):

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String.fromCodePoint(0x1F303); // or 127747 in decimal
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Specifications

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Specification
{{SpecName('ESDraft', '#sec-string.fromcodepoint', 'String.fromCodePoint')}}
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Browser compatibility

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{{Compat("javascript.builtins.String.fromCodePoint")}}

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See also

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