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                  <a href="https://github.com/WoltLab/docs.woltlab.com/edit/5.4/docs/migration/wsc53/javascript.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="migrating-from-wsc-53-javascript">Migrating from WSC 5.3 - JavaScript<a class="headerlink" href="#migrating-from-wsc-53-javascript" title="Permanent link">#</a></h1>
<h2 id="wcf_click_event"><code>WCF_CLICK_EVENT</code><a class="headerlink" href="#wcf_click_event" title="Permanent link">#</a></h2>
<p>For event listeners on click events, <code>WCF_CLICK_EVENT</code> is deprecated and should no longer be used.
Instead, use <code>click</code> directly:</p>
<div class="highlight"><pre><span></span><code><span class="c1">// before</span>
<span class="nx">element</span><span class="p">.</span><span class="nx">addEventListener</span><span class="p">(</span><span class="nx">WCF_CLICK_EVENT</span><span class="p">,</span> <span class="k">this</span><span class="p">.</span><span class="nx">_click</span><span class="p">.</span><span class="nx">bind</span><span class="p">(</span><span class="k">this</span><span class="p">));</span>

<span class="c1">// after</span>
<span class="nx">element</span><span class="p">.</span><span class="nx">addEventListener</span><span class="p">(</span><span class="s1">&#39;click&#39;</span><span class="p">,</span> <span class="p">(</span><span class="nx">ev</span><span class="p">)</span> <span class="p">=&gt;</span> <span class="k">this</span><span class="p">.</span><span class="nx">_click</span><span class="p">(</span><span class="nx">ev</span><span class="p">));</span>
</code></pre></div>
<h2 id="wcftableemptytablehandler"><code>WCF.Table.EmptyTableHandler</code><a class="headerlink" href="#wcftableemptytablehandler" title="Permanent link">#</a></h2>
<p>When all objects in a table or list are deleted via their delete button or clipboard actions, an empty table or list can remain.
Previously, <code>WCF.Table.EmptyTableHandler</code> had to be explicitly used in each template for these tables and lists to reload the page.
As a TypeScript-based replacement for <code>WCF.Table.EmptyTableHandler</code> that is only initialized once globally, <code>WoltLabSuite/Core/Ui/Empty</code> was added.
To use this new module, you only have to add the CSS class <code>jsReloadPageWhenEmpty</code> to the relevant HTML element.
Once this HTML element no longer has child elements, the page is reloaded.
To also cover scenarios in which there are fixed child elements that should not be considered when determining if there are no child elements, the <code>data-reload-page-when-empty="ignore"</code> can be set for these elements.</p>
<p>Examples:</p>
<div class="highlight"><pre><span></span><code><span class="x">&lt;table class=&quot;table&quot;&gt;</span>
<span class="x">    &lt;thead&gt;</span>
<span class="x">        &lt;tr&gt;</span>
<span class="x">            </span><span class="cp">{</span><span class="c">* … *</span><span class="cp">}</span><span class="x"></span>
<span class="x">        &lt;/tr&gt;</span>
<span class="x">    &lt;/thead&gt;</span>

<span class="x">    &lt;tbody class=&quot;jsReloadPageWhenEmpty&quot;&gt;</span>
<span class="x">        </span><span class="cp">{</span><span class="nf">foreach</span> <span class="na">from</span><span class="o">=</span><span class="nv">$objects</span> <span class="na">item</span><span class="o">=</span><span class="na">object</span><span class="cp">}</span><span class="x"></span>
<span class="x">            &lt;tr&gt;</span>
<span class="x">                </span><span class="cp">{</span><span class="c">* … *</span><span class="cp">}</span><span class="x"></span>
<span class="x">            &lt;/tr&gt;</span>
<span class="x">        </span><span class="cp">{</span><span class="nf">/foreach</span><span class="cp">}</span><span class="x"></span>
<span class="x">    &lt;/tbody&gt;</span>
<span class="x">&lt;/table&gt;</span>
</code></pre></div>
<div class="highlight"><pre><span></span><code><span class="x">&lt;div class=&quot;section tabularBox messageGroupList&quot;&gt;</span>
<span class="x">    &lt;ol class=&quot;tabularList jsReloadPageWhenEmpty&quot;&gt;</span>
<span class="x">        &lt;li class=&quot;tabularListRow tabularListRowHead&quot; data-reload-page-when-empty=&quot;ignore&quot;&gt;</span>
<span class="x">            </span><span class="cp">{</span><span class="c">* … *</span><span class="cp">}</span><span class="x"></span>
<span class="x">        &lt;/li&gt;</span>

<span class="x">        </span><span class="cp">{</span><span class="nf">foreach</span> <span class="na">from</span><span class="o">=</span><span class="nv">$objects</span> <span class="na">item</span><span class="o">=</span><span class="na">object</span><span class="cp">}</span><span class="x"></span>
<span class="x">            &lt;li&gt;</span>
<span class="x">                </span><span class="cp">{</span><span class="c">* … *</span><span class="cp">}</span><span class="x"></span>
<span class="x">            &lt;/li&gt;</span>
<span class="x">        </span><span class="cp">{</span><span class="nf">/foreach</span><span class="cp">}</span><span class="x"></span>
<span class="x">    &lt;/ol&gt;</span>
<span class="x">&lt;/div&gt;</span>
</code></pre></div>
                
              
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