uCertify JavaScript Chapter 5

Which JavaScript statement is used to force the flow of control back to the top of a loop?

• break

• while

• for

• continue

Which code will display an alert if the variable timerMinutes has a value 10?

• if (timerMinutes == 10) alert("Time Expired!");

• if ("timerMinutes" = 10) {

  alert("Time Expired!");

  }

• if ("timerMinutes" == 10); {

  alert("Time Expired!");

  }

• if ("timerMinutes" = 10) alert("Time Expired!");

What is the purpose of the switch statement?

• To force the flow of control back to the top of a loop

• To exit a loop that would otherwise continue to execute

• To repeat a group of statements for some particular range of values

• To compare a value against other values, to search for a match

The continue statement can be used:

• only with a for loop or a while loop.

• only with a break statement.

• only within a for loop.

• within a for loop or a while loop.

Which JavaScript statement should you use to test for a single condition and branch to a process?

• if

• for

• if...else

• while

What is the purpose of the while statement?

• To execute a block of code for as long as a condition is true

• To delay execution of a block of code for as long as a condition is true

• To delay execution of a block of code until a condition is true

• To execute a block of code until a condition is true

Which JavaScript statement should you use to repeat a group of statements for some particular range of values?

• if...else

• for

• do...while

• continue

Which of the following statements is true of control structures?

• They are used in code to avoid program errors.

• They are methods that return at least one value.

• They make decisions based on Boolean values.

• They are exclusive to JavaScript.

Consider the following code snippet:

var x = 100;

while (x > 5) {

x--;

}

What will be the value of x after the execution of the given code snippet?

• 5

• 4

• 6

• 100

Which type of statement provides a way to exit a loop that would otherwise continue to execute?

• while

• break

• continue

• for