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PODropdown value depends on another dropdown value
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  1. PODropdown value depends on another dropdown value
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    copied!<p>I have this type of form in which i have one drodown :</p> <pre><code> &lt;b&gt;Please mention Lunch or Dinner or both&lt;/b&gt;&lt;br/&gt; &lt;select name="ldb" id="ldb" onchange="coajax();"&gt; &lt;option value=""&gt;&lt;/option&gt; &lt;option value="1"&gt;Lunch&lt;/option&gt; &lt;option value="2"&gt;Dinner&lt;/option&gt; &lt;option value="3"&gt;Both&lt;/option&gt; &lt;/select&gt; </code></pre> <p>If user selects Lunch then i want to display dropdown :</p> <pre><code> &lt;select name="lunch" id="lunch"&gt; &lt;option value=""&gt;&lt;/option&gt; &lt;option value=""&gt;10-12pm&lt;/option&gt; &lt;option value=""&gt;11-1pm&lt;/option&gt; &lt;option value=""&gt;12-2pm&lt;/option&gt; &lt;/select&gt; </code></pre> <p>and if user selects Dinner then i want to display Dropdown:</p> <pre><code> &lt;select name="dinner" id="dinner"&gt; &lt;option value=""&gt;&lt;/option&gt; &lt;option value=""&gt;4-6pm&lt;/option&gt; &lt;option value=""&gt;5-7pm&lt;/option&gt; &lt;option value=""&gt;6-8pm&lt;/option&gt; &lt;option value=""&gt;7-9pm&lt;/option&gt; &lt;option value=""&gt;8-10pm&lt;/option&gt; &lt;/select&gt; </code></pre> <p>and if user selects both then last two dropdown should display. I tried using ajax :</p> <pre><code> &lt;script type="text/javascript"&gt; function coajax() { var xmlhttp; if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } var q="lunch.php?lid=" + document.getElementById("ldb").value; xmlhttp.open("GET",q,false); xmlhttp.send(null); document.getElementById("lunch").innerHTML=xmlhttp.responseText; } &lt;/script&gt; </code></pre> <p>but i got confused.what should I do?</p>
 

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