[SalesForce] Open jQuery Dialog from Custom Button

We have a custom button on the detail page of the case designed to open a modal dialog popup, however receiving the $g(…).dialog is not a function error message. I've searched around the web and can't find a solution that quite fits, below is code, any suggestions are much appreciated:

    {!REQUIRESCRIPT('//ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js')}
{!REQUIRESCRIPT('//ajax.googleapis.com/ajax/libs/jqueryui/1.11.2/jquery-ui.min.js')}
try {

var html = '<div id="dialog" title="Drivers License Builder"><p> Here is the first line of the DL builder</p></div>';

   var $g = jQuery.noConflict();
    $g(function() {
        $g('head').append('<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.2/themes/smoothness/jquery-ui.css" type="text/css"/>');

        $g("#dialog").dialog({
            autoOpen: false,
            modal: true,
            buttons: {
                "Generate License": function() {
                    $g(this).dialog("close");
                },
                "Cancel": function() {
                    $g(this).dialog("close");
                }
            }
        });
    });
}

catch(error) {
    alert(error);
}

Best Answer

Check the following things: 1. Button Behavior Execute JavaScript
2. JavaScript: 

{!REQUIRESCRIPT('//ajax.googleapis.com/ajax/libs/jquery/1.11.2/jquery.min.js')} 
{!REQUIRESCRIPT('//ajax.googleapis.com/ajax/libs/jqueryui/1.11.2/jquery-ui.min.js')} 

var html = '<div id="dialog" style="display: none" title="Drivers License Builder"><p> Here is the first line of the DL builder</p></div>'; 

var $g = jQuery.noConflict(); 
$g(function() { 
    $g('head').append('<link rel="stylesheet" href="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.2/themes/smoothness/jquery-ui.css" type="text/css"/>'); 
    $g('body').append(html); 

    $g("#dialog").dialog({ 
        autoOpen: true, 
        modal: true, 
        buttons: { 
            "Generate License": function() { 
                $g(this).dialog("close"); 
            }, 
            "Cancel": function() { 
                $g(this).dialog("close"); 
            } 
        } 
    }); 
});


The thing is that you were not appending the dialog in your html and directly displaying it. So first add it to html. Then display it.
Also set the dialog autoOpen attribute to true so that it shows up automatically.
P.S. The above code works in my D.E. org.

Screenshot

P.S. Select this as an accepted answer if it works for you

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