WEB150: Final Exam

Multiple Choice:

1. What is a correct way to create an array in JavaScript?
   var myArray = {};
   var myArray = [];
   var myArray = Array[];
   myArray = Array();
2. What is a correct way to create an object in JavaScript?
   var myObj = {};
   var myObj = [];
   var myObj = Object[];
   myObj = Object();
3. How can you apply the css property 'background-color' in JavaScript? (assuming myEl is a valid DOM element)
   myEl.background-color: '#000';
   myEl.style.background-color = '#000';
   myEl.style.backgroundColor = '#000';
   myEl.style.background_color = '#000';
4. DOM is an acronym for:
   Dynamic Object Model
   Document Ordered Model
   Document Organization Method
   Document Object Model
5. What will the variable 'count' be strictly (===) after this code is run:
   var count = 27+'1';
   
   28 (a number)
   "28" (a string)
   "271" (a string)
   271 (a number)
6. What method do you use to open a popup window?
   
   document.write();
   document.new();
   window.open();
   popup.open();
7. A JavaScript function without a name is commonly referred to as:
   
   an anonymous function
   a blank function
   nothing, that would be incorrect JavaScript
   none of the above
8. &&, !, and || are examples of:
   
   comparison operators
   logical operators
   mathematical operators
   none of the above
9. Which control structure(s) can you use to iterate through an array of items?
   
   For Loop
   While loop
   both A and B
   none of the above

True or False:

10. Unobtrusive JavaScript is kept apart from document style and structure.
    true
    false
11. JavaScript Libraries are books on the JavaScript language meant to help you learn to code.
    true
    false
12. JavaScript is a scripted version of the Java programming language.
    true
    false

Choose All that Apply:

13. Which of the following JavaScript code snippits will result in a JavaScript runtime error?
    var x = 1+1+'1';
    Alert('1');
    var box-3 = document.getElementById('Box3');
    var x = function(e) { alert(e); };
14. Which of the following are examples of comments in JavaScript?
    // this is a comment
    # this is a comment
    /* this is a comment */
    <!-- this is a comment -->

All finished? Check, double-check and triple-check your answers (and make sure you chose your instructor up top)