Revision 995387 of New in JavaScript 1.4

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

<p>The following is a changelog for JavaScript 1.4, which was only used for Netscape's server side JavaScript released in 1999. The old Netscape documentation can be found on <a href="https://web.archive.org/web/20040802225238/https://developer.netscape.com/docs/manuals/js/core/jsref/index.htm">archive.org</a>.</p>

<h2 id="New_features_in_JavaScript_1.4">New features in JavaScript 1.4</h2>

<ul>
 <li>Exception handling (<a href="/en-US/docs/Web/JavaScript/Reference/Statements/throw"><code>throw</code></a> and <a href="/en-US/docs/Web/JavaScript/Reference/Statements/try...catch"><code>try...catch</code></a>)</li>
 <li><code><a href="/en-US/docs/Web/JavaScript/Reference/Operators/in">in</a></code> operator</li>
 <li><a href="/en-US/docs/Web/JavaScript/Reference/Operators/instanceof"><code>instanceof</code></a> operator</li>
</ul>

<h2 id="Changed_functionality_in_JavaScript_1.4">Changed functionality in JavaScript 1.4</h2>

<ul>
 <li><code><a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval" title="JavaScript/Reference/Global_Functions/Eval">eval()</a></code> changes (cannot be called indirectly and no longer a method of <code>Object</code>)</li>
 <li><code><a href="/en-US/docs/Web/JavaScript/Reference/Functions_and_function_scope/arguments" title="JavaScript/Reference/Functions/arguments">arguments</a></code> not a property of functions</li>
 <li>Deprecated {{jsxref("Function.arity")}} in favor of {{jsxref("Function.length")}}</li>
 <li>Changes to <a href="/en-US/docs/Archive/Web/LiveConnect">LiveConnect</a></li>
</ul>