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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:42:17 -0500 |
commit | da78a9e329e272dedb2400b79a3bdeebff387d47 (patch) | |
tree | e6ef8aa7c43556f55ddfe031a01cf0a8fa271bfe /files/id/web/javascript/reference/global_objects/string/fromcodepoint/index.html | |
parent | 1109132f09d75da9a28b649c7677bb6ce07c40c0 (diff) | |
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diff --git a/files/id/web/javascript/reference/global_objects/string/fromcodepoint/index.html b/files/id/web/javascript/reference/global_objects/string/fromcodepoint/index.html new file mode 100644 index 0000000000..dc4024f941 --- /dev/null +++ b/files/id/web/javascript/reference/global_objects/string/fromcodepoint/index.html @@ -0,0 +1,149 @@ +--- +title: String.fromCodePoint() +slug: Web/JavaScript/Reference/Global_Objects/String/fromCodePoint +tags: + - ECMAScript 2015 + - JavaScript + - Metode + - Referensi + - String +translation_of: Web/JavaScript/Reference/Global_Objects/String/fromCodePoint +--- +<div>{{JSRef}}</div> + +<p>Metode <strong><code>String.fromCodePoint()</code></strong> mengembalikan string yang dibuat dengan menggunakan urutan titik kode yang ditentukan.</p> + +<div>{{EmbedInteractiveExample("pages/js/string-fromcodepoint.html")}}</div> + +<p class="hidden">Sumber untuk contoh interaktif ini disimpan dalam repositori github. Jika anda ingin berkontribusi pada proyek contoh interaktif lainnya, silakan klon <a href="https://github.com/mdn/interactive-examples">https://github.com/mdn/interactive-examples</a> dan kirim permintaan penarikan kepada kami.</p> + +<h2 id="Syntax">Syntax</h2> + +<pre class="syntaxbox"><code>String.fromCodePoint(<var>num1</var>[, ...[, <var>numN</var>]])</code></pre> + +<h3 id="Parameters">Parameters</h3> + +<dl> + <dt><code>num1, ..., num<em>N</em></code></dt> + <dd>Urutan Poin Kode</dd> +</dl> + +<h3 id="Return_value">Return value</h3> + +<p><span class="tlid-translation translation"><span title="">String yang dibuat dengan menggunakan urutan titik kode yang ditentukan.</span></span></p> + +<h3 id="Exceptions">Exceptions</h3> + +<ul> + <li>A {{jsxref("Errors/Not_a_codepoint", "RangeError")}} adalah sebuah pembatalan jika titik kode Unicode yang valid tidak diberikan (e.g. "RangeError: NaN is not a valid code point").</li> +</ul> + +<h2 id="Description">Description</h2> + +<p>Metode ini mengembalikan string dan bukan sebuah objek. {{jsxref("String")}} .</p> + +<p>Karena <code>fromCodePoint()</code> adalah metode statik dari {{jsxref("String")}}, dan anda selalu menggunakannya sebagai <code>String.fromCodePoint()</code>, alih-alih sebagai sebuah metode yang anda buat {{jsxref("String")}}</p> + +<h2 id="Examples">Examples</h2> + +<h3 id="Using_fromCodePoint()">Using <code>fromCodePoint()</code></h3> + +<pre class="brush: js">String.fromCodePoint(42); // "*" +String.fromCodePoint(65, 90); // "AZ" +String.fromCodePoint(0x404); // "\u0404" +String.fromCodePoint(0x2F804); // "\uD87E\uDC04" +String.fromCodePoint(194564); // "\uD87E\uDC04" +String.fromCodePoint(0x1D306, 0x61, 0x1D307) // "\uD834\uDF06a\uD834\uDF07" + +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 +</pre> + +<pre class="brush: js">// String.fromCharCode() sendiri tidak bisa mendapatkan karakter pada titik kode tinggi seperti itu +// Disisi lain, dapat juga mengembalikan karakter 4-byte dan juga +// yang biasa 2-byte (i.e., dapat mengembalikan satu karakter yang sebenarnya sudah dimiliki +// string 2 daripada 1!) +console.log(String.fromCodePoint(0x2F804)); // atau 194564 dalam bilangan desimal +</pre> + +<h2 id="Polyfill">Polyfill</h2> + +<p>Metode <code>String.fromCodePoint</code> telah ditambahkan ke ECMAScript 2015 dan mungkin belum didukung di semua browser web atau lingkungannya. Gunakan kode dibawah ini untuk polyfill:</p> + +<pre class="brush: js">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)); +</pre> + +<h2 id="Specifications">Specifications</h2> + +<table class="standard-table"> + <tbody> + <tr> + <th scope="col">Specification</th> + <th scope="col">Status</th> + <th scope="col">Comment</th> + </tr> + <tr> + <td>{{SpecName('ES2015', '#sec-string.fromcodepoint', 'String.fromCodePoint')}}</td> + <td>{{Spec2('ES2015')}}</td> + <td>Definisi Awal</td> + </tr> + <tr> + <td>{{SpecName('ESDraft', '#sec-string.fromcodepoint', 'String.fromCodePoint')}}</td> + <td>{{Spec2('ESDraft')}}</td> + <td> </td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility">Browser compatibility</h2> + +<p class="hidden">Tabel Kompatibilitas di halaman ini dihasilkan dari data terstruktur. Jika anda ingin berkontribusi pada data, silakan berkunjung <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> dan kirimkan permintaan penarikan</p> + +<p>{{Compat("javascript.builtins.String.fromCodePoint")}}</p> + +<h2 id="See_also">See also</h2> + +<ul> + <li>{{jsxref("String.fromCharCode()")}}</li> + <li>{{jsxref("String.prototype.charAt()")}}</li> + <li>{{jsxref("String.prototype.codePointAt()")}}</li> + <li>{{jsxref("String.prototype.charCodeAt()")}}</li> +</ul> |