链接两个选择表单元素

Question

Can someone help me here I want this two elements two work together if I select one category it should give me narrowed down options

For example if I select fashion it should give me things related to fashion in the other select element

<label>Product Type:<span>*</span></label><br/>
                  <select name="type">
                  <option value="Shoes">Shoes</option>
                  <option value="Bing">Bing</option>
                  <option value="Yahoo">Yahoo</opton>
                  </select>
 <label>Product Category:<span>*</span></label><br/>
                  <select name="Category">
                  <option value="Fashion">Fashion</option>
                  <option value="Children">Children</option>
                  <option value="Stationery &amp; Books">Stationery &amp; Books</option>
                  <option value="Gifts">Gifts</option>
                  <option value="Bags">Bags</option>
                  <option value="Outdoor &amp; Garden">Stationery &amp; Books</option>
                  <option value="Home">Home</option>

                 
                  </select> 

</div>

Answer 1

change

    <select name="Category" id="Category" onchange="getState()">
        <option value="Fashion">Fashion</option>
        <option value="Children">Children</option>
        <option value="Stationery &amp; Books">Stationery &amp; Books</option>
        <option value="Gifts">Gifts</option>
        <option value="Bags">Bags</option>
        <option value="Outdoor &amp; Garden">Stationery &amp; Books</option>
        <option value="Home">Home</option>
    </select>

donot pass any value in onchange event. And change your script like this

<script>
function getState(val) {
    var category = $("#Category").val();
    if(category && div) {
        $.ajax({
            type: "POST",
            url: "get_products.php",
            data:{"category": category},
            success: function(data){
                $("#product-list").val(data);//producy-list is the id of another drop down.
             }
        }); 
    }
}
</script>

in get_products.php file write code to get products of particular category.