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luci/LuCI.request.poll.html
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<!DOCTYPE html><html lang="en" style="font-size:16px"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"><link rel="icon" href="themes/luci-theme-bootstrap/htdocs/luci-static/bootstrap/logo.svg"><link type="text/css" rel="stylesheet" href="extra.css"><title>Class: poll</title><!--[if lt IE 9]>
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xlink:href="#search-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button theme-toggle" aria-label="toggle-theme"><svg><use class="theme-svg-use" xlink:href="#dark-theme-icon"></use></svg></button></div><div class="navbar-right-item"><button class="icon-button font-size" aria-label="change-font-size"><svg><use xlink:href="#font-size-icon"></use></svg></button></div></div><nav></nav></nav></div><div class="toc-container"><div class="toc-content"><span class="bold">On this page</span><div id="eed4d2a0bfd64539bb9df78095dec881"></div></div></div><div class="body-wrapper"><div class="main-content"><div class="main-wrapper"><section><header><h1 id="poll-title" class="has-anchor"><span class="ancestors"><a href="LuCI.html">LuCI</a><a href="LuCI.request.html">.request</a>.</span> poll</h1><div class="class-description"><p>The <code>Request.poll</code> class provides some convenience wrappers around <a href="LuCI.poll.html"><code>LuCI.poll</code></a> mainly to simplify registering repeating HTTP request calls as polling functions.</p></div></header><article><div class="container-overview"><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="luci.js.html">luci.js</a>, <a href="luci.js.html#line948">line 948</a></li></ul></dd></div></dl></div><h2 id="methods" class="subsection-title has-anchor">Methods</h2><h3 class="name has-anchor" id="active"><span class="type-signature"></span>active<span class="signature">()</span><span class="type-signature"> &rarr; {boolean}</span></h3><div class="description"><p>Alias for <code>LuCI.poll.active()</code>.</p></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="luci.js.html">luci.js</a>, <a href="luci.js.html#line1053">line 1053</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">boolean</span></dd></dl></div><h3 class="name has-anchor" id="add"><span class="type-signature"></span>add<span class="signature">(interval, url, options<span class="signature-attributes">opt</span>, callback<span class="signature-attributes">opt</span>)</span><span class="type-signature"> &rarr; {function}</span></h3><div class="description"><p>Register a repeating HTTP request with an optional callback to invoke whenever a response for the request is received.</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th>Attributes</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>interval</code></td><td class="type"><span class="param-type">number</span></td><td class="attributes"></td><td class="description last"><p>The poll interval in seconds.</p></td></tr><tr><td class="name"><code>url</code></td><td class="type"><span class="param-type">string</span></td><td class="attributes"></td><td class="description last"><p>The URL to request on each poll.</p></td></tr><tr><td class="name"><code>options</code></td><td class="type"><span class="param-type"><a href="LuCI.request.html#.RequestOptions">LuCI.<wbr>request.<wbr>RequestOptions</a></span></td><td class="attributes">&lt;optional><br></td><td class="description last"><p>Additional options to configure the request.</p></td></tr><tr><td class="name"><code>callback</code></td><td class="type"><span class="param-type">LuCI.<wbr>request.<wbr>poll.<wbr>callbackFn</span></td><td class="attributes">&lt;optional><br></td><td class="description last"><p><a href="LuCI.request.poll.html#~callbackFn"><code>Callback</code></a> function to invoke for each HTTP reply.</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="luci.js.html">luci.js</a>, <a href="luci.js.html#line991">line 991</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Throws:</strong><dl><dt><div class="param-desc"><p>Throws <code>TypeError</code> when an invalid interval was passed.</p></div></dt><dd></dd><dt><dl><dt>Type</dt><dd><span class="param-type">TypeError</span></dd></dl></dt><dd></dd></dl></div><div class="method-member-container mt-20"><strong>Returns:</strong><div class="param-desc"><p>Returns the internally created poll function.</p></div><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">function</span></dd></dl></div><h3 class="name has-anchor" id="remove"><span class="type-signature"></span>remove<span class="signature">(entry)</span><span class="type-signature"> &rarr; {boolean}</span></h3><div class="description"><p>Remove a polling request that has been previously added using <code>add()</code>. This function is essentially a wrapper around <code>LuCI.poll.remove()</code>.</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>entry</code></td><td class="type"><span class="param-type">function</span></td><td class="description last"><p>The poll function returned by <a href="LuCI.request.poll.html#add"><code>add()</code></a>.</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="luci.js.html">luci.js</a>, <a href="luci.js.html#line1026">line 1026</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><div class="param-desc"><p>Returns <code>true</code> if any function has been removed, else <code>false</code>.</p></div><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">boolean</span></dd></dl></div><h3 class="name has-anchor" id="start"><span class="type-signature"></span>start<span class="signature">()</span><span class="type-signature"> &rarr; {boolean}</span></h3><div class="description"><p>Alias for <code>LuCI.poll.start()</code>.</p></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="luci.js.html">luci.js</a>, <a href="luci.js.html#line1035">line 1035</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">boolean</span></dd></dl></div><h3 class="name has-anchor" id="stop"><span class="type-signature"></span>stop<span class="signature">()</span><span class="type-signature"> &rarr; {boolean}</span></h3><div class="description"><p>Alias for <code>LuCI.poll.stop()</code>.</p></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="luci.js.html">luci.js</a>, <a href="luci.js.html#line1044">line 1044</a></li></ul></dd></div></dl><div class="method-member-container mt-20"><strong>Returns:</strong><dl class="param-type"><dt>Type:&nbsp;</dt><dd><span class="param-type">boolean</span></dd></dl></div><h2 id="type-definitions" class="subsection-title has-anchor">Type Definitions</h2><h3 class="name has-anchor" id="~callbackFn"><span class="type-signature"></span>callbackFn<span class="signature">(res, data, duration)</span></h3><div class="description"><p>The callback function is invoked whenever an HTTP reply to a polled request is received or when the polled request timed out.</p></div><div class="method-member-container flex flex-col w-100 overflow-auto mt-20"><strong>Parameters:</strong><table class="params"><thead><tr><th>Name</th><th>Type</th><th class="last">Description</th></tr></thead><tbody><tr><td class="name"><code>res</code></td><td class="type"><span class="param-type"><a href="LuCI.response.html">LuCI.<wbr>response</a></span></td><td class="description last"><p>The HTTP response object.</p></td></tr><tr><td class="name"><code>data</code></td><td class="type"><span class="param-type">*</span></td><td class="description last"><p>The response JSON if the response could be parsed as such, else <code>null</code>.</p></td></tr><tr><td class="name"><code>duration</code></td><td class="type"><span class="param-type">number</span></td><td class="description last"><p>The total duration of the request in milliseconds.</p></td></tr></tbody></table></div><dl class="details"><div class="details-item-container"><dt class="tag-source bold">Source</dt><dd class="tag-source"><ul><li><a href="luci.js.html">luci.js</a>, <a href="luci.js.html#line949">line 949</a></li></ul></dd></div></dl></article></section></div></div></div><div class="search-container" id="PkfLWpAbet" style="display:none"><div class="wrapper" id="iCxFxjkHbP"><button class="icon-button search-close-button" id="VjLlGakifb" aria-label="close search"><svg><use xlink:href="#close-icon"></use></svg></button><div class="search-box-c"><svg><use xlink:href="#search-icon"></use></svg> <input type="text" id="vpcKVYIppa" class="search-input" placeholder="Search..." autofocus></div><div class="search-result-c" id="fWwVHRuDuN"><span class="search-result-c-text">Type anything to view search result</span></div></div></div><div class="mobile-menu-icon-container"><button class="icon-button" id="mobile-menu" data-isopen="false" aria-label="menu"><svg><use xlink:href="#menu-icon"></use></svg></button></div><div id="mobile-sidebar" class="mobile-sidebar-container"><div class="mobile-sidebar-wrapper"><a href="/" class="sidebar-title sidebar-title-anchor">LuCI Documentation</a><div 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