Question

1. Which of the following is declared correctly and will not result in an error, assuming x 2 and y307 a) for (var j - 10; j < 80, - ) b) for (var 1 - x, c) for (var 1- d) for (var j = x 1 y ) + 5) -80 y: 1 - 5 /*) <= 80 • y: 1 -- 5) 2. The multiple-selection statement is used to handle decision making and can be used to replace multiple if and if...else statements. a) do...while b) case c) break d) switch 3. Consider the following code selections. Assume count is initialized to 7 and num is initialized to 0. while (count < 6 ) nun - count; num - count: } while (count < 6 ) What will the value of num be for i) and ii) respectively after the loops have been executed? a) 0,0 b) 0,7 c) 7,0 d) 7,7 4. What would the browser display if it executed the following script? <script type="text/javascript">

Answer 1

1) The correct declaration is :
for(var j=x;j<=y;j+=5) this will run without error, all others will have runtime errors.
2)Switch statement can be used to handle decision making , and can replace multiple if else.
3)answer is 7,0 as in first the loop is executed one time with do while and then will not be executed as count<6 is false and loop terminates, but one time it runs and assign num=count, but in second code section we are using while(count<6) and then executing num=count which will not be executed as count<6 is false.

not sure about 4th

if you like the answer please provide a thumbs up.