Revision 1028110 of RangeError: radix must be an integer

<div>{{jsSidebar("Errors")}}</div>

<h2 id="Message">Message</h2>

<pre class="syntaxbox">
RangeError: radix must be an integer at least 2 and no greater than 36 (Firefox)
RangeError: toString() radix argument must be between 2 and 36 (Chrome)
</pre>

<h2 id="Error_type">Error type</h2>

<p>{{jsxref("RangeError")}}</p>

<h2 id="What_went_wrong?">What went wrong?</h2>

<p>You were using the optional <code>radix</code> parameter with the {{jsxref("Number.prototype.toString()")}} method. This parameter must be an integer (a number) between 2 and 36 specifying the base of the number system you want to use for representing numeric values.</p>

<p>Why is it limited to 36? A radix that is larger than 10 uses alphabetical characters as digits. Therefore, the radix can not be larger than 36 as the Latin alphabet has 26 characters only.</p>

<p>You probably want to use one of the common radices:</p>

<ul>
 <li>2 for <a href="https://en.wikipedia.org/wiki/Binary_number">binary numbers</a>,</li>
 <li>8 for <a href="https://en.wikipedia.org/wiki/Octal">octal numbers</a>,</li>
 <li>10 for <a href="https://en.wikipedia.org/wiki/Decimal">decimal numbers</a>,</li>
 <li>16 for <a href="https://en.wikipedia.org/wiki/Hexadecimal">hexadecimal numbers</a>.</li>
</ul>

<h2 id="Examples">Examples</h2>

<h3 id="Invalid_cases">Invalid cases</h3>

<pre class="brush: js example-bad">
(42).toString(0);
(42).toString(1);
(42).toString(37);
(42).toString(150);
// You cannot use a string like this for formatting:
(12071989).toString("MM-dd-yyyy");
</pre>

<h3 id="Valid_cases">Valid cases</h3>

<pre class="brush: js example-good">
(42).toString(2);     // "101010" (binary)
(13).toString(8);     // "15"     (octal)
(0x42).toString(10);  // "66"     (decimal)
(100000).toString(16) // "186a0"  (hexadecimal)
</pre>

<h2 id="See_also">See also</h2>

<ul>
 <li>{{jsxref("Number.prototype.toString()")}}</li>
</ul>