Question: What is a closure in JavaScript?
Answer:
A closure in JavaScript is a function that is nested within another function and has access to the outer function's variables.
MCQ: What is a closure in JavaScript?
Correct Answer:
A. A way to declare a variable
Explanation:
A closure in JavaScript is a function that is nested within another function and has access to the outer function's variables.
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Related Questions
- 1. What is the result of the following JavaScript code? function outer() { var x = 10;function inner() {console.log(x); }return inner;}var closure = outer();closure();
- 2. What is the purpose of the call() method in JavaScript?
- 3. What will be logged to the console in the following JavaScript code? var i = 0; do { console.log(i); i++;} while (i < 5);
- 4. What is the purpose of a switch statement in JavaScript?
- 5. Which keyword is used to start a switch statement in JavaScript?
- 6. What is the purpose of a case statement in a switch statement in JavaScript?
- 7. What will be the result of the following switch statement? var day = "Monday";switch (day) { case "Monday".console.log("It's the start of the week."); break; case "Friday". console.log("It's the end of the week."); break; default. console.log("It's a regular day.");}
- 8. What is the purpose of the default case in a switch statement?
- 9. What will be the result of the following switch statement? var day = "Wednesday";switch (day) { case "Monday". console.log("It's the start of the week."); break; case "Friday". console.log("It's the end of the week."); break; default. console.log("It's a regular day.");}
- 10. What is the purpose of the break statement in a switch statement in JavaScript?
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