How do you increment a variable by one in JavaScript?

Question

Question 4 options:

counter++

Both a and c

counter + 1

counter = counter + 1

Answer 1

In JavaScript, you can increment a variable by one using several methods. Among the options you've provided:

1. counter++ - This is a post-increment operation, which increases the value of counter by one.

2. counter + 1 - This expression adds 1 to the current value of counter, but does not change the value of counter itself.

3. counter = counter + 1 - This explicitly assigns the value of counter plus one back to counter, effectively incrementing it by one.

Based on your options, the correct answers for incrementing a variable by one in JavaScript are:

• counter++
• counter = counter + 1

So the answer would be Both a and c.