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

JavaScript AJAX Basics (retiring) Programming AJAX Stage 2 Challenge

Akash Sharma
seal-mask
.a{fill-rule:evenodd;}techdegree
Akash Sharma
Full Stack JavaScript Techdegree Student 14,147 Points
Posted by Akash Sharma
.a{fill-rule:evenodd;}techdegree
Akash Sharma
Full Stack JavaScript Techdegree Student 14,147 Points

Cannot display the ::before css on code

I am trying to do run it with a local webserver (MAMP) however I cannot get the CSS working properly and the ::before does not show up on the console for the employeeList

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>AJAX Office Status Widget</title>
  <link href='//fonts.googleapis.com/css?family=Varela+Round' rel='stylesheet' type='text/css'>
  <link rel="stylesheet" href="css/main.css">
</head>
<body>
  <div class="grid-container centered">
    <div class="grid-100">
      <div class="contained">
        <div class="grid-100">
          <div class="heading">
            <h1>Corporate Intranet</h1>
          </div>
        </div>
        <section class="grid-70 main">
          <h2>Lorem Ipsum Headline</h2>
          <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?</p>
          <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?</p>
          <p>Sed ut perspiciatis unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam, eaque ipsa quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt explicabo. Nemo enim ipsam voluptatem quia voluptas sit aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos qui ratione voluptatem sequi nesciunt. Neque porro quisquam est, qui dolorem ipsum quia dolor sit amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit qui in ea voluptate velit esse quam nihil molestiae consequatur, vel illum qui dolorem eum fugiat quo voluptas nulla pariatur?</p>
        </section>
         <aside class="grid-30 list">
        <h2>Meeting Rooms</h2>
          <div id="roomList">


          </div>
          <h2>Employee Office Status</h2>
          <div id="employeeList">

          </div>
        </aside>
        <footer class="grid-100">
          <p>Copyright, The Intranet Corporation</p>
        </footer>
      </div>
    </div>
  </div>
  <script src="js/widget.js"></script>

</body>
</html>

@charset "UTF-8";

.grid-container:before,
.grid-container:after {
  content: ".";
  display: block;
  overflow: hidden;
  visibility: hidden;
  font-size: 0;
  line-height: 0;
  width: 0;
  height: 0;
}

.grid-container:after {
  clear: both;
}

.grid-container {
  max-width: 1080px;
  position: relative;
}

.grid-30,
.grid-70,
.grid-100 {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  padding-left: 15px;
  padding-right: 15px;
}

body {
  min-width: 320px;
}

@media screen {
  .grid-container:before,
  .grid-container:after {
    content: ".";
    display: block;
    overflow: hidden;
    visibility: hidden;
    font-size: 0;
    line-height: 0;
    width: 0;
    height: 0;
  }

  .grid-container:after {
    clear: both;
  }

  .grid-container {
    max-width: 1080px;
    position: relative;
  }

  .grid-30,
  .grid-70,
  .grid-100 {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding-left: 15px;
    padding-right: 15px;
  }

  body {
    min-width: 320px;
  }
}

@media screen and (min-width: 1080px) {
  .grid-container:before,
  .grid-100:before,
  .grid-container:after,
  .grid-100:after {
    content: ".";
    display: block;
    overflow: hidden;
    visibility: hidden;
    font-size: 0;
    line-height: 0;
    width: 0;
    height: 0;
  }

  .grid-container:after,
  .grid-100:after {
    clear: both;
  }

  .grid-container {
    max-width: 1080px;
    position: relative;
  }

  .grid-30,
  .grid-70,
  .grid-100 {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding-left: 15px;
    padding-right: 15px;
  }

  .grid-30 {
    float: left;
    width: 30%;
  }

  .grid-70 {
    float: left;
    width: 70%;
  }

  .grid-100 {
    clear: both;
    width: 100%;
  }
}

@media screen and (max-width: 400px) {
  @-ms-viewport {
    width: 320px;
  }
}

@media screen and (max-width: 680px) {
  .grid-container:before,
  .grid-container:after {
    content: ".";
    display: block;
    overflow: hidden;
    visibility: hidden;
    font-size: 0;
    line-height: 0;
    width: 0;
    height: 0;
  }

  .grid-container:after {
    clear: both;
  }

  .grid-container {
    max-width: 1080px;
    position: relative;
  }

  .grid-30,
  .grid-70,
  .grid-100 {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding-left: 15px;
    padding-right: 15px;
  }
}

@media screen and (min-width: 680px) and (max-width: 1080px) {
  .grid-container:before,
  .grid-container:after {
    content: ".";
    display: block;
    overflow: hidden;
    visibility: hidden;
    font-size: 0;
    line-height: 0;
    width: 0;
    height: 0;
  }

  .grid-container:after {
    clear: both;
  }

  .grid-container {
    max-width: 1080px;
    position: relative;
  }

  .grid-30,
  .grid-70,
  .grid-100 {
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
    padding-left: 15px;
    padding-right: 15px;
  }
}

.grid-container:before,
.grid-container:after {
  content: ".";
  display: block;
  overflow: hidden;
  visibility: hidden;
  font-size: 0;
  line-height: 0;
  width: 0;
  height: 0;
}

.grid-container:after {
  clear: both;
}

.grid-container {
  max-width: 1080px;
  position: relative;
}

.grid-30,
.grid-70,
.grid-100 {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
  padding-left: 15px;
  padding-right: 15px;
}

html,
body,
div,
h1,
h2,
p,
ul,
li,
aside,
footer,
section {
  margin: 0;
  padding: 0;
  border: 0;
  font: inherit;
  font-size: 100%;
  vertical-align: baseline;
}

html {
  line-height: 1;
}

ul {
  list-style: none;
}

aside,
footer,
section {
  display: block;
}

body {
  background: #edeff0;
  padding: 50px 0 0;
  font-family: "Varela Round", "Helvetica Neue", Helvetica, Arial, sans-serif;
  font-size: 62.5%;
}

.centered {
  margin: 0 auto;
}

.contained {
  background: white;
  padding: 30px 15px;
  margin-bottom: 30px;
  position: relative;
  overflow: hidden;
  -webkit-border-radius: 5px;
  -moz-border-radius: 5px;
  -ms-border-radius: 5px;
  -o-border-radius: 5px;
  border-radius: 5px;
  -webkit-box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.1);
  -moz-box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.1);
  box-shadow: 0 1px 0 0 rgba(0, 0, 0, 0.1);
}

.heading {
  margin-bottom: 20px;
}

h1,
h2 {
  font-size: 2.4em;
  font-weight: 500;
  margin-bottom: 8px;
  color: #384047;
  line-height: 1.2;
}

h2 {
  font-size: 1.8em;
}

aside h2 {
  margin-bottom: 15px;
}

p {
  color: #8d9aa5;
  font-size: 1.4em;
  margin-bottom: 15px;
  line-height: 1.4;
}

ul li {
  margin: 15px 0 0;
  font-size: 1.6em;
  color: #8d9aa5;
  position: relative;
}

ul.rooms {
  margin-bottom: 30px;
}

ul.rooms li {
  font-size: 1em;
  display: inline-block;
  width: 10%;
  padding: 3px 2px 2px;
  border-radius: 2px;
  margin: 0 3px 3px 3px;
  color: white;
    text-align: center;
}

ul.rooms li.empty {
  background-color: #5fcf80;
}
ul.rooms li.full {
  background-color: #ed5a5a;
}

ul.bulleted {
  margin-bottom: 20px;
}

ul.bulleted li {
  padding-left: 40px;
}
ul.bulleted li:before {
  position: absolute;
  top: 0;
  left: 0;
  color: white;
  font-size: .5em;
  padding: 3px 2px 2px;
  border-radius: 2px;
  text-align:center;
  width: 25px;
}

ul.bulleted .in {
  color: #5A6772;
}
ul.bulleted .in:before {
  content: "IN";
  background-color: #5fcf80;
}
ul.bulleted .out {
  color: #A7B4BF;
}
ul.bulleted .out:before {
  content: "OUT";
  background-color: #ed5a5a;
}

footer p {
  color: #b2bac2;
  font-size: 1.15em;
  margin: 0;
}

var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function () {
  if (xhr.readyState === 4) {
    var employees = JSON.parse(xhr.responseText);
    listContruction(employees);

   }
};
xhr.open('GET', 'data/employees.json');
xhr.send();

function listContruction(employees){
  let ul = '<ul class="bulleted">';
  for (let i =0; i < employees.length; i++){
    if (employees[i].inoffice === true) {
      ul+= " <li class='in'>"+employees[i].name+"</li> ";
    }
    else {
       ul+= " <li class='out'>"+employees[i].name+"</li> ";
    }
  }
  ul += " </ul>";
document.getElementById("employeeList").innerHTML = ul;
}

This code does work on the workspace.

1 Answer

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

I would expect this to be more of a client (browser) issue than a server issue. But I notice that the CSS code uses ":before" (one colon) instead of "::before" (two colons).

Most browsers allow both forms but perhaps you're running one that requires the correct two-colon form.