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

Jacob Hopkins
Jacob Hopkins
7,310 Points
Posted by Jacob Hopkins
Jacob Hopkins
7,310 Points

I'm 100% lost on this, can someone help me out?

Take a look at the app.js and preview. The aim of this application is to show what the user types in to the input field and preview it in the H1 tag. Almost all the code is there, there's just one thing missing. Retrieving the value from the input. I forgot how to do it. Could you finish it for me? Thanks!

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.text(titleValue);
  var  = val("#titleInput");
}
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

Lee Fendley
Lee Fendley
6,689 Points

Hi Jacob,

For this one you'll want to retrieve the value of the input field to capture what the user enters. For this you will want to use the .val() function on the input element. Update the updatePreview() function as below:

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

Here you are setting the titleValue var to the value of the titleInput variable, which was declared earlier in your code. Hope this helps, any questions please don't hesitate to ask

Thanks

Grace Ji
Grace Ji
5,402 Points

Thank you!!!!