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<title>[49703] trunk/src/js/_enqueues/admin: Quick/Bulk Edit: Fix `undefined` error when initializing UI Autocomplete 1.12.1 on non-existing element and then attempting to use the autocomplete instance.</title>
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<dt style="float: left; width: 6em; font-weight: bold">Revision</dt> <dd><a style="font-weight: bold" href="https://core.trac.wordpress.org/changeset/49703">49703</a><script type="application/ld+json">{"@context":"http://schema.org","@type":"EmailMessage","description":"Review this Commit","action":{"@type":"ViewAction","url":"https://core.trac.wordpress.org/changeset/49703","name":"Review Commit"}}</script></dd>
<dt style="float: left; width: 6em; font-weight: bold">Author</dt> <dd>azaozz</dd>
<dt style="float: left; width: 6em; font-weight: bold">Date</dt> <dd>2020-11-28 12:44:44 +0000 (Sat, 28 Nov 2020)</dd>
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<pre style='padding-left: 1em; margin: 2em 0; border-left: 2px solid #ccc; line-height: 1.25; font-size: 105%; font-family: sans-serif'>Quick/Bulk Edit: Fix `undefined` error when initializing UI Autocomplete 1.12.1 on non-existing element and then attempting to use the autocomplete instance.

Example: `jQuery( '#nonexisting' ).autocomplete().autocomplete( 'instance' ).something`.

Props _luigi, sabernhardt, donmhico, azaozz.
Fixes <a href="https://core.trac.wordpress.org/ticket/51872">#51872</a>.</pre>

<h3>Modified Paths</h3>
<ul>
<li><a href="#trunksrcjs_enqueuesadmininlineeditpostjs">trunk/src/js/_enqueues/admin/inline-edit-post.js</a></li>
<li><a href="#trunksrcjs_enqueuesadmintagssuggestjs">trunk/src/js/_enqueues/admin/tags-suggest.js</a></li>
</ul>

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<h3>Diff</h3>
<a id="trunksrcjs_enqueuesadmininlineeditpostjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/js/_enqueues/admin/inline-edit-post.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/js/_enqueues/admin/inline-edit-post.js  2020-11-27 17:08:34 UTC (rev 49702)
+++ trunk/src/js/_enqueues/admin/inline-edit-post.js    2020-11-28 12:44:44 UTC (rev 49703)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -329,6 +329,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">                                textarea = $('textarea.tax_input_' + taxname, editRow),
</span><span class="cx" style="display: block; padding: 0 10px">                                comma = wp.i18n._x( ',', 'tag delimiter' ).trim();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                        // Ensure the textarea exists.
+                       if ( ! textarea.length ) {
+                               return;
+                       }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                         terms.find( 'img' ).replaceWith( function() { return this.alt; } );
</span><span class="cx" style="display: block; padding: 0 10px">                        terms = terms.text();
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span></span></pre></div>
<a id="trunksrcjs_enqueuesadmintagssuggestjs"></a>
<div class="modfile"><h4 style="background-color: #eee; color: inherit; margin: 1em 0; padding: 1.3em; font-size: 115%">Modified: trunk/src/js/_enqueues/admin/tags-suggest.js</h4>
<pre class="diff"><span>
<span class="info" style="display: block; padding: 0 10px; color: #888">--- trunk/src/js/_enqueues/admin/tags-suggest.js      2020-11-27 17:08:34 UTC (rev 49702)
+++ trunk/src/js/_enqueues/admin/tags-suggest.js        2020-11-28 12:44:44 UTC (rev 49703)
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -38,6 +38,11 @@
</span><span class="cx" style="display: block; padding: 0 10px">                var last;
</span><span class="cx" style="display: block; padding: 0 10px">                var $element = $( this );
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                // Do not initialize if the element doesn't exist.
+               if ( ! $element.length ) {
+                       return;
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 options = options || {};
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                var taxonomy = options.taxonomy || $element.attr( 'data-wp-taxonomy' ) || 'post_tag';
</span><span class="lines" style="display: block; padding: 0 10px; color: #888">@@ -146,14 +151,19 @@
</span><span class="cx" style="display: block; padding: 0 10px"> 
</span><span class="cx" style="display: block; padding: 0 10px">                $element.on( 'keydown', function() {
</span><span class="cx" style="display: block; padding: 0 10px">                        $element.removeAttr( 'aria-activedescendant' );
</span><del style="background-color: #fdd; text-decoration:none; display:block; padding: 0 10px">-                } )
-               .autocomplete( options )
-               .autocomplete( 'instance' )._renderItem = function( ul, item ) {
-                       return $( '<li role="option" id="wp-tags-autocomplete-' + item.id + '">' )
-                               .text( item.name )
-                               .appendTo( ul );
-               };
</del><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+         } );
</ins><span class="cx" style="display: block; padding: 0 10px"> 
</span><ins style="background-color: #dfd; text-decoration:none; display:block; padding: 0 10px">+                $element.autocomplete( options );
+
+               // Ensure the autocomplete instance exists.
+               if ( $element.autocomplete( 'instance' ) ) {
+                       $element.autocomplete( 'instance' )._renderItem = function( ul, item ) {
+                               return $( '<li role="option" id="wp-tags-autocomplete-' + item.id + '">' )
+                                       .text( item.name )
+                                       .appendTo( ul );
+                       };
+               }
+
</ins><span class="cx" style="display: block; padding: 0 10px">                 $element.attr( {
</span><span class="cx" style="display: block; padding: 0 10px">                        'role': 'combobox',
</span><span class="cx" style="display: block; padding: 0 10px">                        'aria-autocomplete': 'list',
</span></span></pre>
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