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POSearch through a big list fast with jQuery
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  1. POSearch through a big list fast with jQuery
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    copied!<p>I'm using this code to search trough about 500 li tags.</p> <pre><code>$(function() { $.expr[":"].containsInCaseSensitive = function(el, i, m){ var search = m[3]; if (!search) return false; return eval("/" + search + "/i").test($(el).text()); }; $('#query').focus().keyup(function(e){ if(this.value.length &gt; 0){ $('ul#abbreviations li').hide(); $('ul#abbreviations li:containsInCaseSensitive(' + this.value + ')').show(); } else { $('ul#abbreviations li').show(); } if(e.keyCode == 13) { $(this).val(''); $('ul#abbreviations li').show(); } }); }); </code></pre> <p>And here is the HTML:</p> <pre><code>&lt;input type="text" id="query" value=""/&gt; &lt;ul id="abbreviations"&gt; &lt;li&gt;ABC&lt;span&gt;description&lt;/span&gt;&lt;/li&gt; &lt;li&gt;BCA&lt;span&gt;description&lt;/span&gt;&lt;/li&gt; &lt;li&gt;ADC&lt;span&gt;description&lt;/span&gt;&lt;/li&gt; &lt;/ul&gt; </code></pre> <p>This script is very slow with this many li tags.</p> <p>How can I make it faster, and how can I search trough only the ABC text in the li, and not the span tags (without changing the html) ?</p> <p>I know about the existing plugins, but I need a small implementation like this. <br /><br /></p> <p><b>Here's the finished code for anyone interested</b></p> <pre><code>var abbrs = {}; $('ul#abbreviations li').each(function(i){ abbrs[this.firstChild.nodeValue] = i; }); $('#query').focus().keyup(function(e){ if(this.value.length &gt;= 2){ $('ul#abbreviations li').hide(); var filterBy = this.value.toUpperCase(); for (var abbr in abbrs) { if (abbr.indexOf(filterBy) !== -1) { var li = abbrs[abbr]; $('ul#abbreviations li:eq('+li+')').show(); } } } else { $('ul#abbreviations li').show(); } if(e.keyCode == 13) { $(this).val(''); $('ul#abbreviations li').show(); } }); </code></pre>
 

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