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30 Cards in this Set
- Front
- Back
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The JavaScript code for the following algorithm is ____. If age >= 65 Then discountRate = 0.10 End If |
if (age >= 65) Then { discountRate = 0.10; } |
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A ____ evaluates to a true or false value. |
Boolean expression |
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The following symbols are known as ____. <, >, ==, <=, >=, != |
comparison operators |
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When two conditions are joined by the logical ____ operator, both must be true for the combined condition to be true.
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And |
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A ____ occurs when two or more conditions have to be evaluated for an action to take place. |
complex condition |
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Which of the following represents a negated condition?
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if (!(daysOverdue > 10 || fineOwed > 0.00)) { document.write("Your account is in good standing." + BR);}
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The keywords And, Or, and Not, are known as ____.
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logical operators |
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The following if statement will execute the code block
var x = 1; var y = 2; if ((x == y) || (x > y)) { document.write("Isn't JavaScript Great!"); } |
False |
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The comparison operator === returns true if
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The values on both sides are equal and of the same type |
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The following are ALL logical operators &&, ||, and ! |
True |
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A parameter acts like a in the body of a function? |
local variable
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A function can return this many values?
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One |
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When a function is finished executing the program ends?
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False
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You can name a function anything you want using any characters you want?
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False
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The first thing in a function declaration is?
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The function keyword |
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The order of the arguments in a function call must match the order of the function's parameter list?
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True |
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Which message is displayed in the alert for the following script?
var message="I am the original message"; function setMessage() { var message = "I am another message"; } setMessage(); alert(message); |
I am the original message |
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When a variable is passed by value as a function argument, it means a copy of the variable is passed to the function. Any changes made to the variable's value in the function will not affect the original variable's value?
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True |
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In a function call the values in parentheses are called?
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Arguments |
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In the following function declaration the declared message variable is global?
function displayMessage() { message = "This is a message"; } |
True |
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What is the numbered position of an array called?
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index or subscript |
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someArray has six elements. How would you access the fifth element?
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someArray[4] |
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The syntax to create an empty array is?
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var someArray = []; |
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Arrays should be used to store?
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A list of one or more values of the same data type
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A for loop is best suited for iterating through all the elements of an array because?
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The array length is always known & You know the exact number of iterations that are needed
(Both B and C)
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The syntax to create a populated, or initialized, array is?
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var someArray = [1, 2, 3, 4]; |
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What kind of loop is the for loop?
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A counter controlled loop |
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The JavaScript array push function is used to?
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Add a value to the end of the array |
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In the array someArray, what does someArray.length display?
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The number of elements in the array (regardless of whether or not they are populated)
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What JavaScript array function would you use to remove an element from the beginning of an array?
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The shift function |
