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+---
+title: Error
+slug: Web/JavaScript/Reference/Global_Objects/Error
+tags:
+  - Error
+  - JavaScript
+  - Reference
+translation_of: Web/JavaScript/Reference/Global_Objects/Error
+---
+<div>{{JSRef}}</div>
+
+<p>Konstruktor <strong><code>Error</code></strong> membuat sebuah objek error. Misal objek <code>Error</code> di lontarkan ketika terjadi runtime error. Objek <code>Error</code> juga dapat digunakan sebagai objek dasar dengan pengecualian yang ditentukan pengguna. Berikut untuk standard jenis built-in error.</p>
+
+<h2 id="Sintaks">Sintaks</h2>
+
+<pre class="syntaxbox">new Error([<var>message</var>[, <var>fileName</var>[, <var>lineNumber</var>]]])</pre>
+
+<h3 id="Parameter">Parameter</h3>
+
+<dl>
+ <dt><code>message</code></dt>
+ <dd>Optional. Human-readable description of the error.</dd>
+ <dt><code>fileName</code> {{non-standard_inline}}</dt>
+ <dd>Optional. The value for the <code>fileName</code> property on the created <code>Error</code> object. Defaults to the name of the file containing the code that called the <code>Error()</code> constructor.</dd>
+ <dt><code>lineNumber</code> {{non-standard_inline}}</dt>
+ <dd>Optional. The value for the <code>lineNumber</code> property on the created <code>Error</code> object. Defaults to the line number containing the <code>Error()</code> constructor invocation.</dd>
+</dl>
+
+<h2 id="Description">Description</h2>
+
+<p>Runtime errors result in new <code>Error</code> objects being created and thrown.</p>
+
+<p>This page documents the use of the <code>Error</code> object itself and its use as a constructor function. For a list of properties and methods inherited by <code>Error</code> instances, see {{jsxref("Error.prototype")}}.</p>
+
+<h3 id="Error_types">Error types</h3>
+
+<p>Besides the generic <code>Error</code> constructor, there are six other core error constructors in JavaScript. For client-side exceptions, see <a href="/en-US/docs/Web/JavaScript/Guide/Statements#Exception_Handling_Statements">Exception Handling Statements</a>.</p>
+
+<dl>
+ <dt>{{jsxref("EvalError")}}</dt>
+ <dd>Creates an instance representing an error that occurs regarding the global function {{jsxref("Global_Objects/eval", "eval()")}}.</dd>
+ <dt>{{jsxref("InternalError")}} {{non-standard_inline}}</dt>
+ <dd>Creates an instance representing an error that occurs when an internal error in the JavaScript engine is thrown. E.g. "too much recursion".</dd>
+ <dt>{{jsxref("RangeError")}}</dt>
+ <dd>Creates an instance representing an error that occurs when a numeric variable or parameter is outside of its valid range.</dd>
+ <dt>{{jsxref("ReferenceError")}}</dt>
+ <dd>Creates an instance representing an error that occurs when de-referencing an invalid reference.</dd>
+ <dt>{{jsxref("SyntaxError")}}</dt>
+ <dd>Creates an instance representing a syntax error that occurs while parsing code in {{jsxref("Global_Objects/eval", "eval()")}}.</dd>
+ <dt>{{jsxref("TypeError")}}</dt>
+ <dd>Creates an instance representing an error that occurs when a variable or parameter is not of a valid type.</dd>
+ <dt>{{jsxref("URIError")}}</dt>
+ <dd>Creates an instance representing an error that occurs when {{jsxref("Global_Objects/encodeURI", "encodeURI()")}} or {{jsxref("Global_Objects/decodeURI", "decodeURI()")}} are passed invalid parameters.</dd>
+</dl>
+
+<h2 id="Properties">Properties</h2>
+
+<dl>
+ <dt>{{jsxref("Error.prototype")}}</dt>
+ <dd>Allows the addition of properties to <code>Error</code> instances.</dd>
+</dl>
+
+<h2 id="Methods">Methods</h2>
+
+<p>The global <code>Error</code> object contains no methods of its own, however, it does inherit some methods through the prototype chain.</p>
+
+<h2 id="Error_instances"><code>Error</code> instances</h2>
+
+<div>{{page('en-US/docs/JavaScript/Reference/Global_Objects/Error/prototype', 'Description')}}</div>
+
+<h3 id="Properties_2">Properties</h3>
+
+<div>{{page('en-US/docs/JavaScript/Reference/Global_Objects/Error/prototype', 'Properties')}}</div>
+
+<h3 id="Methods_2">Methods</h3>
+
+<div>{{page('en-US/docs/JavaScript/Reference/Global_Objects/Error/prototype', 'Methods')}}</div>
+
+<h2 id="Examples">Examples</h2>
+
+<h3 id="Throwing_a_generic_error">Throwing a generic error</h3>
+
+<p>Usually you create an <code>Error</code> object with the intention of raising it using the {{jsxref("Statements/throw", "throw")}} keyword. You can handle the error using the {{jsxref("Statements/try...catch", "try...catch")}} construct:</p>
+
+<pre class="brush: js">try {
+  throw new Error('Whoops!');
+} catch (e) {
+  console.log(e.name + ': ' + e.message);
+}
+</pre>
+
+<h3 id="Handling_a_specific_error">Handling a specific error</h3>
+
+<p>You can choose to handle only specific error types by testing the error type with the error's {{jsxref("Object.prototype.constructor", "constructor")}} property or, if you're writing for modern JavaScript engines, {{jsxref("Operators/instanceof", "instanceof")}} keyword:</p>
+
+<pre class="brush: js">try {
+  foo.bar();
+} catch (e) {
+  if (e instanceof EvalError) {
+    console.log(e.name + ': ' + e.message);
+  } else if (e instanceof RangeError) {
+    console.log(e.name + ': ' + e.message);
+  }
+  // ... etc
+}
+</pre>
+
+<h3 id="Custom_Error_Types">Custom Error Types</h3>
+
+<p>You might want to define your own error types deriving from <code>Error</code> to be able to <code>throw new MyError()</code> and use <code>instanceof MyError</code> to check the kind of error in the exception handler. The common way to do this is demonstrated below.</p>
+
+<div class="warning">
+<p>Note that the thrown <code>MyError</code> will report incorrect <code>lineNumber</code> and <code>fileName</code> at least in Firefox.</p>
+</div>
+
+<p>See also the <a href="http://stackoverflow.com/questions/1382107/whats-a-good-way-to-extend-error-in-javascript">"What's a good way to extend Error in JavaScript?" discussion on Stackoverflow</a>.</p>
+
+<pre class="brush: js">// Create a new object, that prototypically inherits from the Error constructor
+function MyError(message) {
+  this.name = 'MyError';
+  this.message = message || 'Default Message';
+  this.stack = (new Error()).stack;
+}
+MyError.prototype = Object.create(Error.prototype);
+MyError.prototype.constructor = MyError;
+
+try {
+  throw new MyError();
+} catch (e) {
+  console.log(e.name);     // 'MyError'
+  console.log(e.message);  // 'Default Message'
+}
+
+try {
+  throw new MyError('custom message');
+} catch (e) {
+  console.log(e.name);     // 'MyError'
+  console.log(e.message);  // 'custom message'
+}</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('ES1')}}</td>
+   <td>{{Spec2('ES1')}}</td>
+   <td>Initial definition. Implemented in JavaScript 1.1.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES5.1', '#sec-15.11', 'Error')}}</td>
+   <td>{{Spec2('ES5.1')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ES6', '#sec-error-objects', 'Error')}}</td>
+   <td>{{Spec2('ES6')}}</td>
+   <td> </td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-error-objects', 'Error')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </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>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</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>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+   <td>{{CompatVersionUnknown}}</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="See_also">See also</h2>
+
+<ul>
+ <li>{{jsxref("Error.prototype")}}</li>
+ <li>{{jsxref("Statements/throw", "throw")}}</li>
+ <li>{{jsxref("Statements/try...catch", "try...catch")}}</li>
+</ul>