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我目前正在製作一個網站，使用jquery插件ddslick來製作圖片的下拉列表。我選擇做實踐的狀態，我想知道如何使用jQuery來搜索它，因爲它是一個插件？如何搜索長下拉選項/選擇列表？
<div id="myDropdown"></div>
<select id="states" name="states" class="custom-select">
<option value="1" data-imagesrc="stateflags/compass.png" id="va" data-description="Choose your destination" > Explore</option>
<option value="2" data-imagesrc="stateflags/ak.png" id= "nc" data-description="Alaska"> Alaska </option>
<option value="3" data-imagesrc="stateflags/az.png" id= "nc" data-description="Arizona"> Arizona </option>
<option value="4" data-imagesrc="stateflags/ar.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="5" data-imagesrc="stateflags/ca.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="6" data-imagesrc="stateflags/co.png" id= "nc" data-description="formRegister"> North Carolina </option>
<option value="7" data-imagesrc="stateflags/ct.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="8" data-imagesrc="stateflags/de.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="9" data-imagesrc="stateflags/fl.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="10" data-imagesrc="stateflags/ga.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="11" data-imagesrc="stateflags/hi.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="12" data-imagesrc="stateflags/id.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="13" data-imagesrc="stateflags/il.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="14" data-imagesrc="stateflags/in.png" id= "nc" data-description="North Carolina"> Indiana </option>
<option value="15" data-imagesrc="stateflags/ia.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="16" data-imagesrc="stateflags/ks.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="17" data-imagesrc="stateflags/ky.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="18" data-imagesrc="stateflags/la.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="19" data-imagesrc="stateflags/me.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="20" data-imagesrc="stateflags/md.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="21" data-imagesrc="stateflags/ma.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="22" data-imagesrc="stateflags/mi.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="23" data-imagesrc="stateflags/mn.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="24" data-imagesrc="stateflags/ms.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="25" data-imagesrc="stateflags/mo.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="26" data-imagesrc="stateflags/mt.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="27" data-imagesrc="stateflags/ne.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="28" data-imagesrc="stateflags/nv.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="29" data-imagesrc="stateflags/nh.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="30" data-imagesrc="stateflags/nj.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="31" data-imagesrc="stateflags/nm.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="32" data-imagesrc="stateflags/ny.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="33" data-imagesrc="stateflags/nc.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="34" data-imagesrc="stateflags/nd.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="35" data-imagesrc="stateflags/oh.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="36" data-imagesrc="stateflags/ok.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="37" data-imagesrc="stateflags/or.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="38" data-imagesrc="stateflags/ri.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="39" data-imagesrc="stateflags/sc.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="40" data-imagesrc="stateflags/sd.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="41" data-imagesrc="stateflags/tn.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="42" data-imagesrc="stateflags/tx.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="43" data-imagesrc="stateflags/ut.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="44" data-imagesrc="stateflags/vt.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="45" data-imagesrc="stateflags/va.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="46" data-imagesrc="stateflags/wa.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="47" data-imagesrc="stateflags/wv.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="48" data-imagesrc="stateflags/wi.png" id= "nc" data-description="North Carolina"> North Carolina </option>
<option value="49" data-imagesrc="stateflags/wy.png" id= "nc" data-description="North Carolina"> North Carolina </option>
</select>
<script type="text/javascript">
$(document).ready(function(){
$('#states').ddslick();
});
</script>