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+---
+title: 'RangeError: precision is out of range'
+slug: Web/JavaScript/Reference/Errors/Precision_range
+translation_of: Web/JavaScript/Reference/Errors/Precision_range
+---
+<div>{{jsSidebar("Errors")}}</div>
+
+<p>The JavaScript exception "precision is out of range" occurs when a number that's outside of the range of 0 and 20 (or 21) was passed into <code>toFixed</code> or <code>toPrecision</code>.</p>
+
+<h2 id="Message">Message</h2>
+
+<pre class="syntaxbox notranslate">RangeError: The number of fractional digits is out of range (Edge)
+RangeError: The precision is out of range (Edge)
+RangeError: precision {0} out of range (Firefox)
+RangeError: toExponential() argument must be between 0 and 20 (Chrome)
+RangeError: toFixed() digits argument must be between 0 and 20 (Chrome)
+RangeError: toPrecision() argument must be between 1 and 21 (Chrome)
+</pre>
+
+<h2 id="Error_type">Error type</h2>
+
+<p>{{jsxref("RangeError")}}</p>
+
+<h2 id="Que_salió_mal">Que salió mal?</h2>
+
+<p>Fué un argumento preciso fuera de rango en uno de estos metodos:</p>
+
+<ul>
+ <li>{{jsxref("Number.prototype.toExponential()")}}</li>
+ <li>{{jsxref("Number.prototype.toFixed()")}}</li>
+ <li>{{jsxref("Number.prototype.toPrecision()")}}</li>
+</ul>
+
+<p>El rango permitido para estos metodos usualmente esta entre 0 o 20 (o 21). De todas formas la <span><span>especificación</span></span>  ECMAScript permite extender este rango.</p>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">Method</th>
+   <th scope="col">Firefox (SpiderMonkey)</th>
+   <th scope="col">Chrome, Opera (V8)</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{jsxref("Number.prototype.toExponential()")}}</td>
+   <td>0 to 100</td>
+   <td>0 to 20</td>
+  </tr>
+  <tr>
+   <td>{{jsxref("Number.prototype.toFixed()")}}</td>
+   <td>-20 to 100</td>
+   <td>0 to 20</td>
+  </tr>
+  <tr>
+   <td>{{jsxref("Number.prototype.toPrecision()")}}</td>
+   <td>1 to 100</td>
+   <td>1 to 21</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Examples">Examples</h2>
+
+<h3 id="Casos_no_validos">Casos no validos</h3>
+
+<pre class="brush: js example-bad notranslate">77.1234.toExponential(-1);  // RangeError
+77.1234.toExponential(101); // RangeError
+
+2.34.toFixed(-100);         // RangeError
+2.34.toFixed(1001);         // RangeError
+
+1234.5.toPrecision(-1);     // RangeError
+1234.5.toPrecision(101);    // RangeError
+</pre>
+
+<h3 id="Casos_validos">Casos validos</h3>
+
+<pre class="brush: js example-good notranslate">77.1234.toExponential(4); // 7.7123e+1
+77.1234.toExponential(2); // 7.71e+1
+
+2.34.toFixed(1); // 2.3
+2.35.toFixed(1); // 2.4 (note that it rounds up in this case)
+
+5.123456.toPrecision(5); // 5.1235
+5.123456.toPrecision(2); // 5.1
+5.123456.toPrecision(1); // 5
+</pre>
+
+<h2 id="También_te_puede_interesar">También te puede interesar:</h2>
+
+<ul>
+ <li>{{jsxref("Number.prototype.toExponential()")}}</li>
+ <li>{{jsxref("Number.prototype.toFixed()")}}</li>
+ <li>{{jsxref("Number.prototype.toPrecision()")}}</li>
+</ul>