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JavaScript jQuery Basics (2014) Creating a Mobile Drop Down Menu Using change()

Raeed Sabree
Raeed Sabree
10,664 Points
Posted by Raeed Sabree
Raeed Sabree
10,664 Points

modify the $button click code so it now performs the redirect when the select is changed

what exactly do they want me to do because i tried changing select to .change

js/app.js 
//Problem: It look gross in smaller browser widths and small devices
//Solution: To hide the text links and swap them out with a more appropriate navigation

//Create a select and append to #menu
var $select = $("<select></select>");
$("#menu").append($select);

//Cycle over menu links
$("#menu a").each(function(){
  var $anchor = $(this);
  //Create an option
  var $option = $("<option></option>");

  //Deal with selected options depending on current page
  if($anchor.parent().hasClass("selected")) {
    $option.prop("selected", true);
  }
  //option's value is the href
  $option.val($anchor.attr("href"));
  //option's text is the text of link
  $option.text($anchor.text());
  //append option to select
  $select.append($option);
});
//Create button 
var $button = $("<button>Go</button>");

//Bind click to button
$button.click(function(){
  //Go to select's location
  window.location = $select.val();
});
index.html 
<!DOCTYPE html>
<html>
<head>
<link rel="stylesheet" href="css/style.css" type="text/css" media="screen" title="no title" charset="utf-8">
</head>
<body>
    <div id="menu">
        <ul>
            <li class="selected"><a href="index.html">Home</a></li>
            <li><a href="about.html">About</a></li>
            <li><a href="contact.html">Contact</a></li>
            <li><a href="support.html">Support</a></li>
            <li><a href="faqs.html">FAQs</a></li>
            <li><a href="events.html">Events</a></li>
        </ul>
    </div>
    <h1>Home</h1>
    <p>This is the home page.</p>
    <script src="//code.jquery.com/jquery-1.11.0.min.js" type="text/javascript" charset="utf-8"></script>
    <script src="js/app.js" type="text/javascript" charset="utf-8"></script>
</body>
</html>

2 Answers

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

For this step, you want to bind the handler that changes the location differently. Right now it's set up to be triggered by a click event on the button ($button). The challenge asks you to make it be triggered by a change event on the select ($select).

The comment that says //Bind click to button doesn't have to be changed for the challenge, but if you wanted to make it accurate, after your other edits it should say something like //Bind change to select.

I'm betting you can figure it out now without an explicit spoiler.

Raeed Sabree
Raeed Sabree
10,664 Points
Raeed Sabree
Raeed Sabree
10,664 Points

okay so how do i modify the click button without changing the .click?

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

You want to change the handler so instead of handling a button click, it handles a select change.

You won't use .click to establish the handler anymore.

Raeed Sabree
Raeed Sabree
10,664 Points
Raeed Sabree
Raeed Sabree
10,664 Points

so what do i have to do in order to pass this challenge? what are they asking of me?

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

Right now, the handler that does the redirect is set up to be triggered by a click event on the button ($button). That's done on this line:

$button.click(function(){

The challenge is asking you to rewrite that line so instead of handling a button click, it handles a select change.

The title of this challenge is "Using change()" - that's also a hint.

Raeed Sabree
Raeed Sabree
10,664 Points
Raeed Sabree
Raeed Sabree
10,664 Points

so add $button.change(function(){}) somewhere on the page?

Raeed Sabree
Raeed Sabree
10,664 Points
Raeed Sabree
Raeed Sabree
10,664 Points

so add $button.change(function(){}) somewhere on the page?

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

The button won't be the source of the change event. The select will.

And you aren't adding a new handler, you're changing the conditions that trigger the handler already there.

Raeed Sabree
Raeed Sabree
10,664 Points
Raeed Sabree
Raeed Sabree
10,664 Points

so would it work better if instead of using $button.change(function(){} i use $button.select(function(){}

Steven Parker
Steven Parker
231,269 Points
Steven Parker
Steven Parker
231,269 Points

You're going in the wrong direction. Select is not an event, it is an element, just like button is.

The whole idea is to change the handler so instead of handling a button click, it handles a select change.

At this point, it would probably be a very good idea to review the video just before the challenge, particularly from time index 0:45 to 2:50. You will see an example of this same thing being done.

Raeed Sabree
Raeed Sabree
10,664 Points
Raeed Sabree
Raeed Sabree
10,664 Points

ohh i had it right when i used change() i was just supossed to change the element from button to select

Marie Urbina
Marie Urbina
7,168 Points

Great hint, got it. Thanks! :)

lan tapiwa mapfungautsi
lan tapiwa mapfungautsi
22,170 Points
lan tapiwa mapfungautsi
lan tapiwa mapfungautsi
22,170 Points

traversing is changing an element inside the DOM (document object model ) to another element e.g a child to its parent element or vice versa