[Solved] Consider this Node.js snippet debugged in VS Code with a breakpoint set on line 4:1 let a = 3;... 4 console.log(total);When the debugger pauses at line 4, what value will the variable total hold? | Node.js

Node.js - Debugging and Profiling

Consider this Node.js snippet debugged in VS Code with a breakpoint set on line 4:

1 let a = 3;
2 let b = 7;
3 let total = a + b;
4 console.log(total);

When the debugger pauses at line 4, what value will the variable total hold?

Aundefined

B10

CNaN

Dnull

Step-by-Step Solution

Solution:

Step 1: Analyze variable assignment
Variables a and b are assigned 3 and 7 respectively.
Step 2: Calculate total
Line 3 sums a and b, so total = 3 + 7 = 10.
Step 3: Debugger pause at line 4
At line 4, total has been assigned the value 10.
Final Answer:
10 -> Option B
Quick Check:
Variable total holds the sum before console.log executes [OK]

Quick Trick: Variables hold assigned values when breakpoint hits [OK]

Common Mistakes:

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