Instruction
- Total number of questions : 10.
- Time alloted : 10 minutes.
- Each question carry 1 mark.
- No Negative marks
- DO NOT refresh the page.
- All the best :-).
1. |
The main purpose of a “Live Wire” in NetScape is to |
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Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: A Live Wire database driver also supports a number of non-relational databases. |
2. |
The type of a variable that is volatile is |
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Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: The variables whose values can be changed are called mutable variable types. |
3. |
A function definition expression can be called |
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Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: a function definition expression is a “function literal” in the same way that an object initializer is an “object literal.” A Function definition expression typically consists of the keyword function followed by a comma-separated list of zero or more identifiers (the parameter names) in parentheses and a block of JavaScript code (the function body) in curly braces. |
4. |
The output for the following code snippet would most appropriately be var a=5 , b=1 var obj = { a : 10 } with(obj) { alert(b) } |
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Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: The interpreter checks obj for property b, fails and takes it from outside of with. |
5. |
What are the three important manipulations done in a for loop on a loop variable? |
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Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: In a for loop, the initialization, the test, and the update are the three crucial manipulations of a loop variable. |
6. |
The object has three object attributes namely |
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Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: Every object has three associated object attributes : |
7. |
Consider the following code snippet var a1 = [,,,]; var a2 = new Array(3); 0 in a1 0 in a2 The result would be |
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Your Answer: Option (Not Answered) Correct Answer: Option A Explanation: a1 has an element with index 0 and a2 has no element with index 0. |
8. |
Consider the following code snippet function printprops(o) { for(var p in o) console.log(p + ": " + o[p] + "\n"); } What will the above code snippet result ? |
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Your Answer: Option (Not Answered) Correct Answer: Option B Explanation: The above code snippet returns undefined. |
9. |
Do functions in JavaScript necessarily return a value ? |
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Your Answer: Option (Not Answered) Correct Answer: Option C Explanation: None. |
10. |
What must be done in order to implement Lexical Scoping? |
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