jQuery question

Question

Hello,

I'm being asked to complete the following code challenge in the 'Query Basics course:

On line 11 in app.js, implement the isUsernamePresent function. Return true if the username length is greater than 0.

The error I'm getting is: Bummer! There was an error with your code: TypeError: '[object Object]' is not a function (evaluating '$username()')

The code I have is supposed to be attached. Thanks for any help you can provide.

Jim Gravitt

js/app.js

//Problem: Hints are shown even when form is valid
//Solution: Hide and show them at appropriate times
var $password = $("#password");
var $confirmPassword = $("#confirm_password");
var $username = $("#username");

//Hide hints
$("form span").hide();

function isUsernamePresent() {
return $username().val().length > 0;
}

function isPasswordValid() {
  return $password.val().length > 8;
}

function arePasswordsMatching() {
  return $password.val() === $confirmPassword.val();
}

function canSubmit() {
  return isPasswordValid() && arePasswordsMatching();
}

function passwordEvent(){
    //Find out if password is valid  
    if(isPasswordValid()) {
      //Hide hint if valid
      $password.next().hide();
    } else {
      //else show hint
      $password.next().show();
    }
}

function confirmPasswordEvent() {
  //Find out if password and confirmation match
  if(arePasswordsMatching()) {
    //Hide hint if match
    $confirmPassword.next().hide();
  } else {
    //else show hint 
    $confirmPassword.next().show();
  }
}

function enableSubmitEvent() {
  $("#submit").prop("disabled", !canSubmit());
}


function usernameEvent() {
  if(isUsernamePresent()) {
    $username.next().hide();
  } else {
    $username.next().show();
  } 
}

//When event happens on password input
$password.focus(passwordEvent).keyup(passwordEvent).keyup(confirmPasswordEvent).keyup(enableSubmitEvent);

//When event happens on confirmation input
$confirmPassword.focus(confirmPasswordEvent).keyup(confirmPasswordEvent).keyup(enableSubmitEvent);

$username.focus(usernameEvent).keyup(usernameEvent).keyup(enableSubmitEvent);

enableSubmitEvent();

index.html

<!DOCTYPE html>
<html>
<head>
    <title>Sign Up Form</title>
    <link rel="stylesheet" href="css/style.css" type="text/css" media="screen" title="no title" charset="utf-8">
</head>
<body>

    <form action="#" method="post">
        <p>
            <label for="username">Username</label>
            <input id="username" name="username" type="text">
            <span>Please enter username</span>
        </p>
        <p>
            <label for="password">Password</label>
            <input id="password" name="password" type="password">
            <span>Enter a password longer than 8 characters</span>
        </p>
        <p>
            <label for="confirm_password">Confirm Password</label>
            <input id="confirm_password" name="confirm_password" type="password">
            <span>Please confirm your password</span>
        </p>
        <p>
            <input type="submit" value="SUBMIT" id="submit">
        </p>
    </form>
    <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>

Answer 1 · 2017-01-28T16:18:10Z

January 28, 2017 4:18pm

Hi Jim, $username isn't a function, you've accidentally added brackets to the end :)

function isUsernamePresent() {
  return $username.val().length > 0;
}

Answer 2 · 2017-01-28T16:33:41Z

January 28, 2017 4:33pm

Thanks. Any idea about what code I need to "implement the isUsernamePresent function. Return true if the username length is greater than 0." as the code challenge is requesting? The correct code is supposed to be placed on one line, line 11, right after the line

function isUsernamePresent() {

Thanks for any help you can provide. Jim Gravitt

Answer 3 · 2017-01-29T21:51:19Z

January 29, 2017 9:51pm

Thanks for your help. I was able to answer the second part of the challenge. Thanks again.

Jim Gravitt

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