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Erik L
Full Stack JavaScript Techdegree Graduate 19,470 PointsAjax not working
hello, I am currently doing this video https://teamtreehouse.com/library/processing-json-data, however when I try to preview the website on the browser I get an error, whats going on? for reference the screen is just blank, I get no numerical errors
this is my code so far, I am using visisual studio code's live server
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>AJAX Office Status Widget</title>
<link href='http://fonts.googleapis.com/css?family=Varela+Round' rel='stylesheet' type='text/css'>
<link rel="stylesheet" href="css/main.css">
<script src="js/widget.js"></script>
</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>Employee Office Status</h2>
<div id="employeeList">
</div>
</aside>
<footer class="grid-100">
<p>Copyright, The Intranet Corporation</p>
</footer>
</div>
</div>
</div>
</body>
</html>
this is my js file:
//step 1: create a XMLHttpRequest
var xhr = new XMLHttpRequest();
//step 2: create a callback function
xhr.onreadystatechange = function () {
if (xhr.readyState === 4) {
//convert json data into javascript array of objects using JSON.parse
var employees = JSON.parse(xhr.responseText);
var statusHTML = 'ul class= "bulleted">';
//loop through array
for (var i=0; i<employees.length; i =+ 1) {
if (employees[i].inoffice === true) {
statusHTML += '<li class="in">';
} else {
statusHTML += '<li class="out">';
}
statusHTML += employees[i].name;
statusHTML += '</li>';
}
statusHTML += '</ul>';
document.getElementById('employeeList').innerHTML = statusHTML;
}
};
//step 3: open a request
xhr.open('GET', 'data/employees.json');
//step 4: send the request
xhr.send();
1 Answer
KRIS NIKOLAISEN
54,971 PointsI changed the following two lines and now it appears to load correctly
// var statusHTML = 'ul class= "bulleted">';
var statusHTML = '<ul class= "bulleted">'; //added angle bracket to ul
//loop through array
// for (var i=0; i<employees.length; i =+ 1) {
for (var i=0; i<employees.length; i += 1) { . //changed =+ to +=
i =+ 1 creates an infinite loop which is why you see a blank page (depending on your browser)