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Q. What will be the step of the interpreter in a jump statement when an exception is thrown?

(A) The interpreter stops its work
(B) The interpreter throws another exception
(C) The interpreter jumps to the nearest enclosing exception handler
(D) None of the mentioned

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Q. Consider the following code snippet
while (a != 0)
{
if (spam>a == 1)
continue;
else
a++;
}
What will be the role of the continue keyword in the above code snippet?

(A) The continue keyword restarts the loop
(B) The continue keyword skips the next iteration
(C) The continue keyword skips the rest of the statements in that iteration
(D) None of the mentioned

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Q. Consider the following code snippet
function f(o)
{
if (o === undefined) debugger;
}
What could be the task of the statement debugger?

(A) It does nothing but a simple breakpoint
(B) It debugs the error in that statement and restarts the statement’s execution
(C) It is used as a keyword that debugs the entire program at once
(D) All of the mentioned

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Q. Among the keywords below, which one is not a statement?

(A) debugger
(B) with
(C) if
(D) use strict

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Q. The output for the following code snippet would most appropriately be
var a=5 , b=1
var obj = { a : 10 }
with(obj)
{
alert(b)
}

(A) 10
(B) Error
(C) 1
(D) 5

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Q. A conditional expression is also called a

(A) Alternate to if-else
(B) Immediate if
(C) If-then-else statement
(D) None of the mentioned

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Q. Which is a more efficient code snippet ?
Code 1 :
for(var num=10;num>=1;num--)
{
document.writeln(num);
}

Code 2 :
var num=10;
while(num>=1)
{
document.writeln(num);
num++;
}

(A) Code 1
(B) Code 2
(C) Both Code 1 and Code 2
(D) Cannot Compare

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Q. When an empty statement is encountered, a JavaScript interpreter

(A) Ignores the statement
(B) Prompts to complete the statement
(C) Throws an error
(D) Throws an exception

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Q. Consider the following statements
switch(expression)
{
statements
}
In the above switch syntax, the expression is compared with the case labels using which of the following operator(s) ?

(A) ==
(B) equals
(C) equal
(D) ===

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Q. Consider the following statements
var count = 0;
while (count < 10)
{
console.log(count);
count++;
}
In the above code snippet, what happens?

(A) The values of count is logged or stored in a particular location or storage
(B) The value of count from 0 to 9 is displayed in the console
(C) An error is displayed
(D) An exception is thrown

JavaScript MCQs with answers Page - 70

Q. What will be the step of the interpreter in a jump statement when an exception is thrown?

Q. Consider the following code snippet
while (a != 0)
{
if (spam>a == 1)
continue;
else
a++;
}
What will be the role of the continue keyword in the above code snippet?

Q. Consider the following code snippet
function f(o)
{
if (o === undefined) debugger;
}
What could be the task of the statement debugger?

Q. Among the keywords below, which one is not a statement?

Q. The output for the following code snippet would most appropriately be
var a=5 , b=1
var obj = { a : 10 }
with(obj)
{
alert(b)
}

Q. A conditional expression is also called a

Q. Which is a more efficient code snippet ?
Code 1 :
for(var num=10;num>=1;num--)
{
document.writeln(num);
}

Code 2 :
var num=10;
while(num>=1)
{
document.writeln(num);
num++;
}

Q. When an empty statement is encountered, a JavaScript interpreter

Q. Consider the following statements
switch(expression)
{
statements
}
In the above switch syntax, the expression is compared with the case labels using which of the following operator(s) ?

Q. Consider the following statements
var count = 0;
while (count < 10)
{
console.log(count);
count++;
}
In the above code snippet, what happens?

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JavaScript MCQs with answers Page - 70

Q. What will be the step of the interpreter in a jump statement when an exception is thrown?

Q. Consider the following code snippet while (a != 0) { if (spam>a == 1) continue; else a++; } What will be the role of the continue keyword in the above code snippet?

Q. Consider the following code snippet function f(o) { if (o === undefined) debugger; } What could be the task of the statement debugger?

Q. Among the keywords below, which one is not a statement?

Q. The output for the following code snippet would most appropriately be var a=5 , b=1 var obj = { a : 10 } with(obj) { alert(b) }

Q. A conditional expression is also called a

Q. Which is a more efficient code snippet ? Code 1 : for(var num=10;num>=1;num--) { document.writeln(num); } Code 2 : var num=10; while(num>=1) { document.writeln(num); num++; }

Q. When an empty statement is encountered, a JavaScript interpreter

Q. Consider the following statements switch(expression) { statements } In the above switch syntax, the expression is compared with the case labels using which of the following operator(s) ?

Q. Consider the following statements var count = 0; while (count < 10) { console.log(count); count++; } In the above code snippet, what happens?

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Q. Consider the following code snippet
while (a != 0)
{
if (spam>a == 1)
continue;
else
a++;
}
What will be the role of the continue keyword in the above code snippet?

Q. Consider the following code snippet
function f(o)
{
if (o === undefined) debugger;
}
What could be the task of the statement debugger?

Q. The output for the following code snippet would most appropriately be
var a=5 , b=1
var obj = { a : 10 }
with(obj)
{
alert(b)
}

Q. Which is a more efficient code snippet ?
Code 1 :
for(var num=10;num>=1;num--)
{
document.writeln(num);
}

Code 2 :
var num=10;
while(num>=1)
{
document.writeln(num);
num++;
}

Q. Consider the following statements
switch(expression)
{
statements
}
In the above switch syntax, the expression is compared with the case labels using which of the following operator(s) ?

Q. Consider the following statements
var count = 0;
while (count < 10)
{
console.log(count);
count++;
}
In the above code snippet, what happens?