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JavaScript jQuery Basics (2014) Creating a Mobile Drop Down Menu Getting a value

Chris Gutierrez
Chris Gutierrez
6,911 Points

I just don't understand.

getting the inputed value is hard for me to understand. what am i doing wrong.

js/app.js
//Select the input for the title for blog post.
var $titleInput = $("#title");

//Select the preview h1 tag
var $previewTitle = $("#titlePreview");

// Every second update the preview
var previewTimer = setInterval(updatePreview, 1000);

function updatePreview(){  
  //Get the user's input
  var titleValue;
  //Set the user input as the preview title. 
  $previewTitle.val($titleInput.text(titleValue));

}
index.html
<!DOCTYPE html>
<html>
<head>
  <link rel="stylesheet" type="text/css" href="theme.css">
</head>
<body>
  <div id="form">
    <label for="title">Blog Post Title</label><input id="title" name="title" value="" placeholder="Enter your blog title here">
  </div>
  <div id="preview">
    <h1 id="titlePreview"></h1>
  </div>
  <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>
theme.css
  #form {
    width: 45%;
    float: left;
  }
  #preview {
    width: 45%;
    float: right;
  }
  label {
    width: 20%;
    display: inline-block;
  }
  input {
    width: 70%;
  }

1 Answer

Seth Kroger
Seth Kroger
56,407 Points

You're close but you have it turned around. The $previewTitle is supposed to be the output, so it needs to be $previewTitle.text("some text here") to set it. The value is in $titleInput, so it's $titleInput.val() to get it.

$previewTitle.text($titleInput.val()) ;

Or since there's a variable to store the input in:

function updatePreview(){  
  //Get the user's input
  var titleValue = $titleInput.text(titleValue);
  //Set the user input as the preview title. 
  $previewTitle.val(titleValue);

}