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                  <a href="https://github.com/WoltLab/docs.woltlab.com/edit/5.4/docs/javascript/new-api_dom.md" title="Edit this page" class="md-content__button md-icon">
                    <svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path d="M20.71 7.04c.39-.39.39-1.04 0-1.41l-2.34-2.34c-.37-.39-1.02-.39-1.41 0l-1.84 1.83 3.75 3.75M3 17.25V21h3.75L17.81 9.93l-3.75-3.75L3 17.25z"/></svg>
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                <h1 id="working-with-the-dom-javascript-api">Working with the DOM - JavaScript API<a class="headerlink" href="#working-with-the-dom-javascript-api" title="Permanent link">#</a></h1>
<h2 id="helper-functions">Helper Functions<a class="headerlink" href="#helper-functions" title="Permanent link">#</a></h2>
<p>There is large set of <a href="../helper-functions/">helper functions</a> that assist
you when working with the DOM tree and its elements. These functions are globally
available and do not require explicit module imports.</p>
<h2 id="domutil"><code>Dom/Util</code><a class="headerlink" href="#domutil" title="Permanent link">#</a></h2>
<h3 id="createfragmentfromhtmlhtml-string-documentfragment"><code>createFragmentFromHtml(html: string): DocumentFragment</code><a class="headerlink" href="#createfragmentfromhtmlhtml-string-documentfragment" title="Permanent link">#</a></h3>
<p>Parses a HTML string and creates a <code>DocumentFragment</code> object that holds the
resulting nodes.</p>
<h3 id="identifyelement-element-string"><code>identify(element: Element): string</code><a class="headerlink" href="#identifyelement-element-string" title="Permanent link">#</a></h3>
<p>Retrieves the unique identifier (<code>id</code>) of an element. If it does not currently
have an id assigned, a generic identifier is used instead.</p>
<h3 id="outerheightelement-element-styles-cssstyledeclaration-number"><code>outerHeight(element: Element, styles?: CSSStyleDeclaration): number</code><a class="headerlink" href="#outerheightelement-element-styles-cssstyledeclaration-number" title="Permanent link">#</a></h3>
<p>Computes the outer height of an element using the element's <code>offsetHeight</code> and
the sum of the rounded down values for <code>margin-top</code> and <code>margin-bottom</code>.</p>
<h3 id="outerwidthelement-element-styles-cssstyledeclaration-number"><code>outerWidth(element: Element, styles?: CSSStyleDeclaration): number</code><a class="headerlink" href="#outerwidthelement-element-styles-cssstyledeclaration-number" title="Permanent link">#</a></h3>
<p>Computes the outer width of an element using the element's <code>offsetWidth</code> and
the sum of the rounded down values for <code>margin-left</code> and <code>margin-right</code>.</p>
<h3 id="outerdimensionselement-element-height-number-width-number"><code>outerDimensions(element: Element): { height: number, width: number }</code><a class="headerlink" href="#outerdimensionselement-element-height-number-width-number" title="Permanent link">#</a></h3>
<p>Computes the outer dimensions of an element including its margins.</p>
<h3 id="offsetelement-element-top-number-left-number"><code>offset(element: Element): { top: number, left: number }</code><a class="headerlink" href="#offsetelement-element-top-number-left-number" title="Permanent link">#</a></h3>
<p>Computes the element's offset relative to the top left corner of the document.</p>
<h3 id="setinnerhtmlelement-element-innerhtml-string"><code>setInnerHtml(element: Element, innerHtml: string)</code><a class="headerlink" href="#setinnerhtmlelement-element-innerhtml-string" title="Permanent link">#</a></h3>
<p>Sets the inner HTML of an element via <code>element.innerHTML = innerHtml</code>. Browsers
do not evaluate any embedded <code>&lt;script&gt;</code> tags, therefore this method extracts each
of them, creates new <code>&lt;script&gt;</code> tags and inserts them in their original order of
appearance.</p>
<h3 id="containselement-element-child-element-boolean"><code>contains(element: Element, child: Element): boolean</code><a class="headerlink" href="#containselement-element-child-element-boolean" title="Permanent link">#</a></h3>
<p>Evaluates if <code>element</code> is a direct or indirect parent element of <code>child</code>.</p>
<h3 id="unwrapchildnodeselement-element"><code>unwrapChildNodes(element: Element)</code><a class="headerlink" href="#unwrapchildnodeselement-element" title="Permanent link">#</a></h3>
<p>Moves all child nodes out of <code>element</code> while maintaining their order, then removes
<code>element</code> from the document.</p>
<h2 id="domchangelistener"><code>Dom/ChangeListener</code><a class="headerlink" href="#domchangelistener" title="Permanent link">#</a></h2>
<p>This class is used to observe specific changes to the DOM, for example after an
Ajax request has completed. For performance reasons this is a manually-invoked
listener that does not rely on a <code>MutationObserver</code>.</p>
<div class="highlight"><pre><span></span><code><span class="nx">require</span><span class="p">([</span><span class="s2">&quot;Dom/ChangeListener&quot;</span><span class="p">],</span> <span class="kd">function</span><span class="p">(</span><span class="nx">DomChangeListener</span><span class="p">)</span> <span class="p">{</span>
  <span class="nx">DomChangeListener</span><span class="p">.</span><span class="nx">add</span><span class="p">(</span><span class="s2">&quot;App/Foo&quot;</span><span class="p">,</span> <span class="kd">function</span><span class="p">()</span> <span class="p">{</span>
    <span class="c1">// the DOM may have been altered significantly</span>
  <span class="p">});</span>

  <span class="c1">// propagate changes to the DOM</span>
  <span class="nx">DomChangeListener</span><span class="p">.</span><span class="nx">trigger</span><span class="p">();</span>
<span class="p">});</span>
</code></pre></div>
                
                  
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