Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

CSS jQuery Basics (2014) Creating a Simple Lightbox Perform: Part 4

Aaron Coursolle
Aaron Coursolle
18,014 Points
Posted by Aaron Coursolle
Aaron Coursolle
18,014 Points

Why are no captions appearing?

Everything else in the lightbox appears to be working

//Problem: User when clicking on image goes to a dead end
//Solution: Create an overlay with a large image - lightbox

//The $-sign before overlay in "var $overlay" doesn't actually do anything
//It is placed in front of the variable for convention sake:
var $overlay = $('<div id="overlay"></div>'); 
var $image = $("<img>");
var $caption = $("<p></p>");

//An image to overlay
$overlay.append($image);

//A caption to overlay
$overlay.append();

//Add overlay
$("body").append($overlay);


//Capture the click event on a link to an image
$("#imageGallery a").click(function(event){
    event.preventDefault();
    var imageLocation = $(this).attr("href");
//Update overlay with the image linked in the link
$image.attr("src", imageLocation);


  //Show the overlay
  $overlay.show();


  //Get child's alt attribute and set caption
  var captionText = $(this).children("img").attr("alt");
  $caption.text(captionText);
});

//When overlay is clicked
$overlay.click(function () {
  //Hide the overlay
  $overlay.hide();
});

/** Start Coding Here **/
#overlay {
  background:rgba(0,0,0,.7);
  width:100%;
  height:100%;
  position:absolute;
  top:0;
  left:0;
  display:none;
  text-align:center;
}

#overlay img {
  margin-top: 10%;
}

#overlay p {
  color:white;
}

1 Answer

Brett Comardelle
Brett Comardelle
8,541 Points

On line 14, it seems that you aren't appending the $caption variable to your $overlay

Jeffrey Sullivan Jr
Jeffrey Sullivan Jr
5,456 Points

It looks like that isn't in the video, so I can see why it is easily missed if you are trying to follow along.

Yixi Guan
Yixi Guan
7,927 Points
Yixi Guan
Yixi Guan
7,927 Points

In teacher's code, there's another "$" is missing. I don't know if it was a mistake. Without the $ sign, my code wouldn't work.

$caption.text($captionText);

It's the one before captionText. Shouldn't it be required?