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<!DOCTYPE html><html><head><meta charset="utf-8"><title>Error JavaScript API</title><meta name="description" content="Interactive API reference for the JavaScript Error Object. An object thrown when an error occurs. There are several specific constructor functions for different types of error conditions: EvalErro"><link rel="stylesheet" type="text/css" href="styles.css"><script type="text/javascript">var _gaq = _gaq || [];
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var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
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})();</script></head><body><script>if (sessionStorage.collapsed === 'true') {
document.body.classList.add('members-collapsed');
}
if (localStorage.theme) {
document.body.parentElement.classList.add(localStorage.theme);
}</script><div class="topnav"><a href="/">JavaScripture</a><div class="bookmarks"><a class="bookmark contribute" href="https://github.com/nkronlage/JavaScripture">Contribute via GitHub</a> <a class="bookmark" href="/feedback">Feedback</a></div></div><div class="container"><nav class="leftnav"><div id="searchContainer"><input id="searchBox" type="text" placeholder="Search (Ctrl + S)" autocomplete="false"><div id="resultsBox" style="display:none;"></div></div><div id="apichooser"><a href="#" onclick="openApiChooser(); return false;"><div class="arrow"></div><span id="selectedsets"></span></a><div id="obscure"></div><div id="apisets"><ul></ul></div></div><div class="toc"><h2>Error</h2><div class="navgroup"><div class="group"><a href="#Constructors">Constructors</a></div><div class="group collapsed"><a href="#InstanceProperties" onclick="expandoClicked(this.parentNode); return false;"><div class="arrow"></div>Instance Properties</a><div class="subgroup"><a href="#message">message</a><a href="#name">name</a></div></div></div><h2>JavaScript API</h2><div id="related-apis" class="navgroup"></div><h2>All API</h2><div id="rootObjs" class="navgroup"><span class="empty">No API set selected.</span></div></div></nav><div class="content"><h1 class="declaration"><span class="object">Error</span> <span class="type">: <a href="/Object">Object</a></span></h1><div class="metadata"><span>constructor</span></div><div class="objectdescription">An object thrown when an error occurs. There are several specific constructor functions for different types of error conditions: <code>EvalError</code>, <code>RangeError</code>, <code>ReferenceError</code>, <code>SyntaxError</code>, <code>TypeError</code>, <code>URIError</code>, <code>NativeError</code>.<div class="membermetadata"><a href="http://www.ecma-international.org/ecma-262/5.1/#sec-15.11" class="spec">Spec</a></div></div><div><a name=""></a><h2></h2><div class="member"><div class="expand-members" title="Toggle showing all descriptions and examples"></div><a name="Error"></a> <a name="Error_String"></a><div class="declaration"><span class="membername primary">Error</span>(<span class="membername">message</span> : <a class="membertype" href="/String">String</a>) : <a class="membertype" href="/Error">Error</a></div><div class="member-body"><p class="description">Same as <a href="#new_Error_String"><code>new Error(message)</code></a>.</p><div class="membermetadata"><a href="http://www.ecma-international.org/ecma-262/5.1/#sec-15.11.1.1" class="spec">Spec</a></div></div></div><div class="member"><div class="expand-members" title="Toggle showing all descriptions and examples"></div><a name="Error"></a> <a name="Error_String_Object"></a><div class="declaration"><span class="membername primary">Error</span>(<span class="membername">message</span> : <a class="membertype" href="/String">String</a>, <span class="membername">options</span> : <a class="membertype" href="/Object">Object</a>) : <a class="membertype" href="/Error">Error</a></div><div class="member-body"><p class="description">Same as <a href="#new_Error_String_Object"><code>new Error(message, options)</code></a>.</p><div class="membermetadata"><a href="https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-error-constructor" class="spec">Spec</a></div></div></div></div><div><a name="Constructors"></a><h2>Constructors</h2><div class="member"><div class="expand-members" title="Toggle showing all descriptions and examples"></div><a name="Error"></a> <a name="new_Error_String"></a><div class="declaration">new <span class="membername primary">Error</span>(<span class="membername">message</span> : <a class="membertype" href="/String">String</a>) : <a class="membertype" href="/Error">Error</a></div><div class="member-body"><p class="description">Creates a new <code>Error</code> with the specified <code>message</code> that describes the error.</p><div class="example"><div class="codePanel"><h4>Example:</h4><textarea class="code" rows="12" cols="60" wrap="off">
var divide = function(x, y) {
if (y === 0) {
throw new Error('divide by zero');
}
return x / y;
};
try {
console.log(divide(10, 0));
}
catch (error) {
console.log(error.name);
console.log(error.message);
}
</textarea><a onclick='executeExample(this.parentNode.parentNode, "Error.Error"); return false' href="#" class="run">Run</a></div><div class="resultsPanel"><h4>Results:</h4><div style="position: relative"><div class="errormessage" style="display: none"></div><pre class="results"> </pre></div></div></div><p></p><div class="membermetadata"><a href="http://www.ecma-international.org/ecma-262/5.1/#sec-15.11.2.1" class="spec">Spec</a></div></div></div><div class="member"><div class="expand-members" title="Toggle showing all descriptions and examples"></div><a name="Error"></a> <a name="new_Error_String_Object"></a><div class="declaration">new <span class="membername primary">Error</span>(<span class="membername">message</span> : <a class="membertype" href="/String">String</a>, <span class="membername">options</span> : <a class="membertype" href="/Object">Object</a>) : <a class="membertype" href="/Error">Error</a><div class="subfunction"><span class="membername">options</span> : {<table><tr><td><span class="membername">cause</span> :</td><td><a class="membertype" href="/Error">Error</a></td><td></td></tr></table><span class="subfunctionclose">}</span></div></div><div class="member-body"><p class="description">Creates a new <code>Error</code> with the specified <code>message</code> that describes the error and original <code>cause</code> of the error.</p><div class="example"><div class="codePanel"><h4>Example:</h4><textarea class="code" rows="12" cols="60" wrap="off">
var validateNumber = function(x) {
if (typeof x !== 'number') {
throw Error(x + ' is not a number');
}
return x;
};
var multiply = function(x, y) {
try {
return validateNumber(x) * validateNumber(y);
}
catch(e) {
throw Error('Unable to multiply', { cause: e });
}
};
try {
console.log(multiply(3, 'abc'));
}
catch (error) {
console.log(error);
console.log('Cause:', error.cause);
}
</textarea><a onclick='executeExample(this.parentNode.parentNode, "Error.Error"); return false' href="#" class="run">Run</a></div><div class="resultsPanel"><h4>Results:</h4><div style="position: relative"><div class="errormessage" style="display: none"></div><pre class="results"> </pre></div></div></div><p></p><div class="membermetadata"><span class="ecmascript2022">ECMAScript 2022</span> <a href="https://tc39.es/ecma262/multipage/fundamental-objects.html#sec-error-constructor" class="spec">Spec</a></div></div></div></div><div><a name="InstanceProperties"></a><h2>Instance Properties</h2><div class="member"><div class="expand-members" title="Toggle showing all descriptions and examples"></div><a name="message"></a><div class="declaration"><span class="membername primary">message</span> : <a class="membertype" href="/String">String</a></div><div class="member-body"><p class="description">A human readable message that describes the error.</p><div class="example"><div class="codePanel"><h4>Example:</h4><textarea class="code" rows="12" cols="60" wrap="off">
try {
foo;
}
catch (error) {
console.log(error.message);
}
</textarea><a onclick='executeExample(this.parentNode.parentNode, "Error.message"); return false' href="#" class="run">Run</a></div><div class="resultsPanel"><h4>Results:</h4><div style="position: relative"><div class="errormessage" style="display: none"></div><pre class="results"> </pre></div></div></div><p></p><div class="membermetadata"><a href="http://www.ecma-international.org/ecma-262/5.1/#sec-15.11.4.3" class="spec">Spec</a></div></div></div><div class="member"><div class="expand-members" title="Toggle showing all descriptions and examples"></div><a name="name"></a><div class="declaration"><span class="membername primary">name</span> : <a class="membertype" href="/String">String</a></div><div class="member-body"><p class="description">The type of error.</p><div class="example"><div class="codePanel"><h4>Example:</h4><textarea class="code" rows="12" cols="60" wrap="off">
try {
foo;
}
catch (error) {
console.log(error.name);
}
</textarea><a onclick='executeExample(this.parentNode.parentNode, "Error.name"); return false' href="#" class="run">Run</a></div><div class="resultsPanel"><h4>Results:</h4><div style="position: relative"><div class="errormessage" style="display: none"></div><pre class="results"> </pre></div></div></div><p></p><div class="membermetadata"><a href="http://www.ecma-international.org/ecma-262/5.1/#sec-15.11.4.2" class="spec">Spec</a></div></div></div></div><div class="bottomnav"><a href="/">home</a> <a href="/license">license</a> <a href="https://github.com/nkronlage/JavaScripture">contribute</a> <a href="/feedback">feedback</a> <a id="toggle-theme" href="#">toggle light/dark mode</a></div><div class="copyright">Copyright © JavaScripture Contributors</div></div></div></body><script src="javascripture.js"></script></html>