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Elliot Birch - Technical Assessment - Username and Password

by David Lomneck

HTML

<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/semantic-ui/2.2.4/semantic.min.css">
<div class="ui container">
  <div class="ui form error">
    <div class="field error">
      <label>Username</label>
      <input type="text" placeholder="Username" id="inputUsername">
    </div>
    <div class="field error">
      <label>Password</label>
      <input type="text" placeholder="Password" id="inputPassword">
    </div>
    <div class="ui error message">
      <div class="header">Something is invalid...</div>
      <p id="errorMessage"></p>
    </div>
  </div>
</div>

JavaScript

//
// Complete implementations of the validateUsername and validatePassword functions
// throwing errors when invalid. You may use: https://developer.mozilla.org if you need help with syntax
// https://getfirebug.com/firebug-lite-debug.js as external resource for a build-in console window


// A valid username is at least 6 characters long
// A valid username cannot be longer than 20 characters
function validateUsername(username) {
	if (username.length < 6 || username.length > 20) {
  	  	throw 'Username is not valid!';
  }
}


// A Valid password must be at least 8 characters long
// A Valid password cannot be longer than 30 characters
// A valid password must contain at least 1 number
// A valid password must contain at least 1 UPPER case letter and 1 lower case letter
function validatePassword(password) {
	// split password and save into splitPassword
  var splitPassword = password.split('');
  // reduce password into boolean, true if number is include, false if not
  var includesNumber = false;
  var includesUpperCase = false;
  var includesLowerCase = false;
	splitPassword.forEach((char, index)=>{
  		includesNumber = includesNumber || !isNaN(Number(char));
      includesUpperCase =  includesUpperCase || (char.charCodeAt(0) > 64 && char.charCodeAt(0) < 91);
      includesLowerCase = includesLowerCase || (char.charCodeAt(0) > 96 && char.charCodeAt(0) < 123);
  })
  

	if (!includesNumber || password.length < 8 || password.length > 30 || !includesLowerCase || !includesUpperCase) {
  	  	throw 'Password is not valid!';
  }
}






// You can ignore everything below this comment
(function() {
  var elements = {
    username: document.getElementById('inputUsername'),
    password: document.getElementById('inputPassword'),
    errorMessage: document.getElementById('errorMessage'),
    form: document.getElementsByClassName('ui form')[0]
  };
  var errors = {};

  wireup(elements.username, validateUsername);
  wireup(elements.password, validatePassword);

  function...