Final Exam: Web Programmer

WHAT YOU WILL LEARN

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  Use the call method to link a javascript object to a function call
  

  distinguish between the var, let, and const keywords when declaring variables
  

  define event listeners and handlers for clicks on a web page button
  

  identify the characteristics of an array
  

  recall what an object is javascript and how it is represented
  

  recognize when variables are destroyed by javascript when a form submission navigates the user to a different web page
  

  manage errors in your application, whether they are raised by javascript or by your own logic using try, catch, and finally blocks
  

  use the assignment operator and the object.assign() method to create new objects
  

  recall how variables of the same name inside closures and in scopes outside them are accessed by functions
  

  initialize and manipulate javascript strings using different techniques
  

  create handlers for the events of users clicking on a button and for modifying the contents of a text box
  

  identify some of the quirks of the javascript language which distinguish it from most other high-level languages
  

  identify the properties and features around arrays and functions in javascript
  

  describe how browsers render web pages as a structured dom
  

  identify when to use prototypes for javascript objects and how they can be defined
  

  define a simple registration form with text, numerical input fields, radio buttons, check boxes and a drop-down menu
  

  use the fetch function to asynchronously retrieve an image file and relate it to the xmlhttprequest of ajax
  

  create and manage date types in javascript
  

  initialize an empty object and add/remove properties to/from that object
  

  delete or replace existing nodes in the dom of your web page
  

  implement basic operators on numbers
  

  identify a number of object methods to access the keys and values of an object
  

  recognize where javascript fits within a larger web application involving html and css
  

  use the document object to retrieve individual elements of your web page and access their values and properties
  

  use the spread operator to expand the contents of arrays
  

  assign a function to a variable and pass a function as an argument to another function
  

  create a function from a string using the new keyword
  

  alter the contents of a web page by modifying its dom
  

  use promises to chain the execution of two functions where one depends on the results returned by the other
  

  recognize how the var, let, and const keywords affect the accessibility of variables in javascript functions
• 

  describe how browsers render web pages as a structured dom
  

  recognize what makes up a closure in javascript
  

  implement an object constructor and use it to instantiate new objects
  

  recognize how closures created within loops interact with variables defined within and outside the loop
  

  recognize how closures can be created within objects and its implications on your code
  

  generate deep and shallow copies of arrays and add and remove array elements
  

  link a html page with a separately defined javascript source file
  

  retrieve the children of elements of your web page as an array
  

  distinguish between the var and let keywords when it comes to the scope of javascript variables
  

  use in-built string operations to analyze and modify string types
  

  define a variety of form validations for different input fields
  

  recognize how javascript can be used to communicate with end users via the html page, alerts, and log messages
  

  access individual form elements and their data contents from javascript
  

  describe multiple ways to declare and manipulate numerical data in javascript
  

  use prototypes to implement inheritance in javascript
  

  recognize what data types in javascript are passed by value and by reference
  

  define functions using the concise syntax available in the es6 specifications for javascript, including the use of arrow functions
  

  list the high-level properties of the javascript programming language
  

  recognize handlers for mouse events on elements of your web page
  

  use the spread syntax and the json object to create new objects
  

  define basic functions and invoke them in javascript
  

  integrate closures with buttons on a web page
  

  create a simple javascript app that writes a message to an html page
  

  define handlers for mouse events on elements of your web page
  

  use function callbacks to ensure the sequential execution of functions
  

  implement counter functions with closures
  

  apply basic operators on numbers and strings
  

  recognize the role of the "this" keyword within the scope of a javascript object
  

  create objects containing different types of data and functions, and access their properties
  

  differentiate variables that are undefined from those whose values are null