Bootstrap dropdown on keyup
<p>I have a working dropdown that gets shown on click of a text box but would like it to always show on keyup. I have the keyup function working, but you still need to click after typing to cause the drop down to show.</p>

<p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
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<pre class="snippet-code-js lang-js prettyprint-override"><code>        //This calls the delay function and will result in the customerNameUL_Populate function being called after the delay has passed.
        function customerNameSearchTextbox_keyup() {
            
            delay(function () {
                if ($('#customerNameSearchTextbox').val().length &gt; 0) {
                    customerNameUL_Populate();
                    alert('dropdown');   //http://getbootstrap.com/javascript/#dropdowns
                    $('#customerNameSearchTextbox').dropdown(); &lt;----- ?
                }
            else {
                    $('#customerNameUL').empty();
                };
            }, 500);
        };

    //This function gets called to populate the list of customers for search
        function customerNameUL_Populate() {

          &lt;working stuff&gt;
            
        };</code></pre>
<pre class="snippet-code-html lang-html prettyprint-override"><code>        &lt;div class="dropdown"&gt;
            &lt;input type="text" id="customerNameSearchTextbox" class="form-control" placeholder="Customer" aria-describedby="basic-addon1" data-toggle="dropdown" onkeyup="customerNameSearchTextbox_keyup();" autocomplete="off"&gt;
            &lt;ul class="dropdown-menu" aria-labelledby="dropdownMenu1" id="customerNameUL"&gt;
            &lt;/ul&gt;
        &lt;/div&gt;</code></pre>
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<p>The confusion I think I have is with what events to call, or what classes to assign, or what events to call. The alert above goes off showing I get where I want to be, just need to replace the line below to cause the customerNameUL to display.</p>