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---
title: WindowOrWorkerGlobalScope.origin
slug: Web/API/origin
tags:
- global scope
- origin
- serialized
translation_of: Web/API/WindowOrWorkerGlobalScope/origin
original_slug: Web/API/WindowOrWorkerGlobalScope/origin
---
<p>{{APIRef()}}{{SeeCompatTable}}{{domxref("WindowOrWorkerGlobalScope")}} 接口的 <code><strong>origin</strong></code> 只读属性返回全局范围的 <strong>origin</strong>, 序列化为一个字符串。</p>
<h2 id="Syntax">Syntax</h2>
<pre class="syntaxbox">let <em>myOrigin</em> = self.origin; // or just origin
</pre>
<h3 id="Value">Value</h3>
<p>A {{domxref("USVString")}}.</p>
<h2 id="Examples">Examples</h2>
<p>Executed from inside a worker script, the following snippet will log the worker's global scope's origin to the console each time it receives a message</p>
<pre class="brush: js">onmessage = function() {
console.log(self.origin);
};</pre>
<p>If the origin is not a scheme/host/port tuple (say you are trying to run it locally, i.e. via <code>file://</code> URL), <code>origin</code> will return the string <code>"null"</code>.</p>
<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('HTML WHATWG', 'webappapis.html#dom-origin', 'WindowOrWorkerGlobalScope.origin')}}</td>
<td>{{Spec2('HTML WHATWG')}}</td>
<td>Initial definition.</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
{{Compat("api.origin")}}
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