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+---
+title: String.fromCodePoint()
+slug: Web/JavaScript/Referencia/Objetos_globales/String/fromCodePoint
+translation_of: Web/JavaScript/Reference/Global_Objects/String/fromCodePoint
+---
+<div>{{JSRef("Global_Objects", "String")}}</div>
+
+<h2 id="Summary" name="Summary">Resumen</h2>
+
+<p>El método estatico <strong><code>String.fromCodePoint()</code></strong> devuelve una cadena creada por una secuencia de puntos de codigo.</p>
+
+<h2 id="Syntax" name="Syntax">Sintaxis</h2>
+
+<pre class="syntaxbox"><code>String.fromCodePoint(<var>num1</var>[, ...[, <var>numN</var>]])</code></pre>
+
+<h3 id="Parameters" name="Parameters">Parametros</h3>
+
+<dl>
+ <dt><code>num1, ..., num<em>N</em></code></dt>
+ <dd>Una secuencia de puntos de código.</dd>
+</dl>
+
+<h3 id="Throws">Throws</h3>
+
+<dl>
+ <dt>{{jsxref("Global_Objects/RangeError", "RangeError")}}</dt>
+ <dd>A {{jsxref("Global_Objects/RangeError", "RangeError")}} is thrown if an invalid Unicode code point is given (e.g. "RangeError: NaN is not a valid code point").</dd>
+</dl>
+
+<h2 id="Description" name="Description">Descripción</h2>
+
+<p>Because <code>fromCodePoint()</code> is a static method of {{jsxref("Global_Objects/String", "String")}}, you always use it as <code>String.fromCodePoint()</code>, rather than as a method of a {{jsxref("Global_Objects/String", "String")}} object you created.</p>
+
+<h2 id="Examples" name="Examples">Ejemplos</h2>
+
+<h3 id="Example:_Using_fromCharCode" name="Example:_Using_fromCharCode">Ejemplos: Usando <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() alone cannot get the character at such a high code point
+// The following, on the other hand, can return a 4-byte character as well as the
+// usual 2-byte ones (i.e., it can return a single character which actually has
+// a string length of 2 instead of 1!)
+console.log(String.fromCodePoint(0x2F804)); // or 194564 in decimal
+</pre>
+
+<h2 id="Polyfill" name="Polyfill">Polyfill</h2>
+
+<p>The <code>String.fromCodePoint</code> method has been added to the ECMAScript standard in version 6 and may not be supported in all web browsers or environments yet. Use the code below for a polyfill:</p>
+
+<pre class="brush: js">/*! http://mths.be/fromcodepoint v0.1.0 by @mathias */
+if (!String.fromCodePoint) {
+  (function() {
+    var defineProperty = (function() {
+      // IE 8 only supports `Object.defineProperty` on DOM elements
+      try {
+        var object = {};
+        var $defineProperty = Object.defineProperty;
+        var result = $defineProperty(object, object, object) &amp;&amp; $defineProperty;
+      } catch(error) {}
+      return result;
+    }());
+    var stringFromCharCode = String.fromCharCode;
+    var floor = Math.floor;
+    var fromCodePoint = function() {
+      var MAX_SIZE = 0x4000;
+      var codeUnits = [];
+      var highSurrogate;
+      var lowSurrogate;
+      var index = -1;
+      var length = arguments.length;
+      if (!length) {
+        return '';
+      }
+      var result = '';
+      while (++index &lt; length) {
+        var codePoint = Number(arguments[index]);
+        if (
+          !isFinite(codePoint) ||       // `NaN`, `+Infinity`, or `-Infinity`
+          codePoint &lt; 0 ||              // not a valid Unicode code point
+          codePoint &gt; 0x10FFFF ||       // not a valid Unicode code point
+          floor(codePoint) != codePoint // not an integer
+        ) {
+          throw RangeError('Invalid code point: ' + codePoint);
+        }
+        if (codePoint &lt;= 0xFFFF) { // BMP code point
+          codeUnits.push(codePoint);
+        } else { // Astral code point; split in surrogate halves
+          // http://mathiasbynens.be/notes/javascript-encoding#surrogate-formulae
+          codePoint -= 0x10000;
+          highSurrogate = (codePoint &gt;&gt; 10) + 0xD800;
+          lowSurrogate = (codePoint % 0x400) + 0xDC00;
+          codeUnits.push(highSurrogate, lowSurrogate);
+        }
+        if (index + 1 == length || codeUnits.length &gt; MAX_SIZE) {
+          result += stringFromCharCode.apply(null, codeUnits);
+          codeUnits.length = 0;
+        }
+      }
+      return result;
+    };
+    if (defineProperty) {
+      defineProperty(String, 'fromCodePoint', {
+        'value': fromCodePoint,
+        'configurable': true,
+        'writable': true
+      });
+    } else {
+      String.fromCodePoint = fromCodePoint;
+    }
+  }());
+}
+</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('ES6', '#sec-string.fromcodepoint', 'String.fromCodePoint')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td>Initial definition.</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Browser_compatibility">Browser compatibility</h2>
+
+<div>{{CompatibilityTable}}</div>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>41</td>
+   <td>{{CompatGeckoDesktop("29")}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Chrome for Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatGeckoMobile("29")}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+   <td>{{CompatNo}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="See_also" name="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>