files/ru/web/api/node/isequalnode/index.html


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---
title: Node.isEqualNode()
slug: Web/API/Node/isEqualNode
translation_of: Web/API/Node/isEqualNode
---
<div>
<div>{{APIRef("DOM")}}</div>
</div>

<p> <code><strong>Node.isEqualNode()</strong></code> проверяет, равны ли два узла. Два узла равны, когда они имеют один и тот же тип, определяющий характеристики (для элементов это будет их идентификатор, количество потомков и т. д.), Его атрибуты совпадают и т. д. Конкретный набор точек данных, которые должны совпадать, зависит от типов узлов.</p>

<h2 id="Syntax" name="Syntax">Синтаксис</h2>

<pre class="syntaxbox">var <var>isEqualNode</var> = <var>node</var>.isEqualNode(<var>otherNode</var>);
</pre>

<ul>
 <li><code>otherNode</code>: Узел {{domxref("Node")}} с которым надо сравнить.</li>
</ul>

<h2 id="Пример">Пример</h2>

<p>В этом примере мы создаём три блока {{HTMLElement ("div")}}. Первый и третий имеют одинаковое содержание и атрибуты, в то время как второй отличается. Затем мы запускаем некоторый JavaScript-код для сравнения узлов с помощью isEqualNode () и выводим результаты.</p>

<h3 id="HTML">HTML</h3>

<pre class="brush: html line-numbers language-html"><code class="language-html"><span class="tag token"><span class="tag token"><span class="punctuation token">&lt;</span>div</span><span class="punctuation token">&gt;</span></span>This is the first element.<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;/</span>div</span><span class="punctuation token">&gt;</span></span>
<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;</span>div</span><span class="punctuation token">&gt;</span></span>This is the second element.<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;/</span>div</span><span class="punctuation token">&gt;</span></span>
<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;</span>div</span><span class="punctuation token">&gt;</span></span>This is the first element.<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;/</span>div</span><span class="punctuation token">&gt;</span></span>

<span class="tag token"><span class="tag token"><span class="punctuation token">&lt;</span>p</span> <span class="attr-name token">id</span><span class="attr-value token"><span class="punctuation token">=</span><span class="punctuation token">"</span>output<span class="punctuation token">"</span></span><span class="punctuation token">&gt;</span></span><span class="tag token"><span class="tag token"><span class="punctuation token">&lt;/</span>p</span><span class="punctuation token">&gt;</span></span></code></pre>

<div class="hidden">
<h3 id="CSS">CSS</h3>

<pre class="brush: css line-numbers language-css"><code class="language-css"><span class="selector token"><span class="id token">#output</span></span> <span class="punctuation token">{</span>
  <span class="property token">width</span><span class="punctuation token">:</span> <span class="number token">440</span><span class="token unit">px</span><span class="punctuation token">;</span>
  <span class="property token">border</span><span class="punctuation token">:</span> <span class="number token">2</span><span class="token unit">px</span> solid black<span class="punctuation token">;</span>
  <span class="property token">border-radius</span><span class="punctuation token">:</span> <span class="number token">5</span><span class="token unit">px</span><span class="punctuation token">;</span>
  <span class="property token">padding</span><span class="punctuation token">:</span> <span class="number token">10</span><span class="token unit">px</span><span class="punctuation token">;</span>
  <span class="property token">margin-top</span><span class="punctuation token">:</span> <span class="number token">20</span><span class="token unit">px</span><span class="punctuation token">;</span>
  <span class="property token">display</span><span class="punctuation token">:</span> block<span class="punctuation token">;</span>
<span class="punctuation token">}</span></code></pre>
</div>

<div class="hidden"></div>

<h3 id="JavaScript">JavaScript</h3>

<pre class="brush: js line-numbers language-js"><code class="language-js"><span class="keyword token">let</span> output <span class="operator token">=</span> document<span class="punctuation token">.</span><span class="function token">getElementById</span><span class="punctuation token">(</span><span class="string token">"output"</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
<span class="keyword token">let</span> divList  <span class="operator token">=</span> document<span class="punctuation token">.</span><span class="function token">getElementsByTagName</span><span class="punctuation token">(</span><span class="string token">"div"</span><span class="punctuation token">)</span><span class="punctuation token">;</span>

output<span class="punctuation token">.</span>innerHTML <span class="operator token">+=</span> <span class="string token">"div 0 equals div 0: "</span> <span class="operator token">+</span> divList<span class="punctuation token">[</span><span class="number token">0</span><span class="punctuation token">]</span><span class="punctuation token">.</span><span class="function token">isEqualNode</span><span class="punctuation token">(</span>divList<span class="punctuation token">[</span><span class="number token">0</span><span class="punctuation token">]</span><span class="punctuation token">)</span> <span class="operator token">+</span> <span class="string token">"&lt;br/&gt;"</span><span class="punctuation token">;</span>
output<span class="punctuation token">.</span>innerHTML <span class="operator token">+=</span> <span class="string token">"div 0 equals div 1: "</span> <span class="operator token">+</span> divList<span class="punctuation token">[</span><span class="number token">0</span><span class="punctuation token">]</span><span class="punctuation token">.</span><span class="function token">isEqualNode</span><span class="punctuation token">(</span>divList<span class="punctuation token">[</span><span class="number token">1</span><span class="punctuation token">]</span><span class="punctuation token">)</span> <span class="operator token">+</span> <span class="string token">"&lt;br/&gt;"</span><span class="punctuation token">;</span>
output<span class="punctuation token">.</span>innerHTML <span class="operator token">+=</span> <span class="string token">"div 0 equals div 2: "</span> <span class="operator token">+</span> divList<span class="punctuation token">[</span><span class="number token">0</span><span class="punctuation token">]</span><span class="punctuation token">.</span><span class="function token">isEqualNode</span><span class="punctuation token">(</span>divList<span class="punctuation token">[</span><span class="number token">2</span><span class="punctuation token">]</span><span class="punctuation token">)</span> <span class="operator token">+</span> <span class="string token">"&lt;br/&gt;"</span><span class="punctuation token">;</span></code></pre>

<h3 id="Results">Results</h3>

<p>{{ EmbedLiveSample('Пример', 480) }}</p>

<h2 id="Specification" name="Specification">Спецификации</h2>

<ul>
 <li>{{spec("https://dom.spec.whatwg.org/#dom-node-isequalnode","DOM Standard","LS")}}</li>
 <li>{{spec("http://www.w3.org/TR/DOM-Level-3-Core/core.html#Node3-isEqualNode","DOM Level 3 Core: isEqualNode","REC")}}</li>
</ul>