Analyze the following code:
let x 10; console.log(x);
What exception will be thrown as a result of its execution attempt?
- TypeError
- RangeError
- ReferenceError
- SyntaxError
Explanation & Hint:
The code contains a syntax error. In the line let x 10;, there is a missing assignment operator (=) between x and 10, which leads to a syntax error. |
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JavaScript Essentials 1 | JSE1 – Module 6 Test Exam Answers Full Score 100%
Analyze the following code:
let x = 10; ocnsole.log(x);
What exception will be thrown as a result of its execution attempt?
- SyntaxError
- ReferenceError
- TypeError
- RangeError
Explanation & Hint:
JavaScript interpreter will throw a ReferenceError and display an error message indicating that ocnsole is not defined. The error occurs because the interpreter cannot find a variable or function named ocnsole, and it is unable to execute the code as intended. |
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JavaScript Essentials 1 | JSE1 – Module 6 Test Exam Answers Full Score 100%
Analyze the following code:
const x = 10; onsole.log(x); x += 10;
What exception will be thrown as a result of its execution attempt?
- ReferenceError
- SyntaxError
- ReferenceError and TypeError
- TypeError
Explanation & Hint:
If you attempt to execute the code with the errors (onsole.log(x) and x += 10;), the JavaScript interpreter will throw a ReferenceError. The ReferenceError will occur due to the typo in onsole.log(x). The error message will indicate that onsole is not defined. |
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JavaScript Essentials 1 | JSE1 – Module 6 Test Exam Answers Full Score 100%
Analyze the following code:
const x = 10; x = 20;
What exception will be thrown as a result of its execution attempt?
- ReferenceError
- TypeError
- RangeError
- SyntaxError
Explanation & Hint:
If you attempt to execute the code the JavaScript interpreter will throw a TypeError. The TypeError will occur because you are trying to reassign a value to a constant variable, which is not allowed. Constants are immutable and their values cannot be changed once assigned. |