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Quiz about JavaScript Course | Practice Quiz-3 
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JavaScript Course | Practice Quiz-3
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Question 1
What will be the output of the following code?
<script>
let result = 0;
for (let i = 0; i < 5; i++) {
result += i;
}
document.write(result);
</script>
5
0
10
None of the above
Question 2
True or false: All keys in an object are strings.
- True
- False
- Depends on the Object type
- None of the above
Question 3
Given a collection of artists and lists of their songs, would you store the artist-song-list pairs in an Object or an Array?
- Object
- Array
- Function
- None of the above
Question 4
What will be the output of the following code?
JavaScript
<script>
if (5) {
document.write("I like peanuts");
}
</script>
- I like peanuts
- undefined
- nothing will be printed
- None of the above
Question 5
What will be the output of the following code?
JavaScript
<script>
let bar = 1;
foo = {};
foo: {
bar : 2;
baz : ++bar;
};
document.write(foo.baz + foo.bar + bar);
</script>
- NaN
- 5
- 4
- 1
Question 6
What will be the output of the following code?
< script>
document.write( 10 > 9 > 8 === true );
</ script>
true
false
1
0
Question 7
What will be the output of the following code?
JavaScript
<script>
document.write(String('Hello') == 'Hello');
</script>
- true
- false
- 1
- 0
Question 8
What will be the output of the following code?
JavaScript
<script>
document.write(( true + false ) > 2 + true );
</script>
- true
- false
- 1
- 0
Question 9
What will be the output of the following code?
JavaScript
<script>
document.write(Number('1') - 1 == 0);
</script>
- true
- false
- 1
- None of the above
Question 10
What will be the output of the following code?
JavaScript
<script>
document.write(NaN == NaN);
</script>
- true
- false
- 1
- 0
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There are 10 questions to complete.
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