Please help me solve this in JavaScript

Question

The snail climbs up 7 feet each day and slips back 2 feet each night.
How many days will it take the snail to get out of a well with the given depth?

Sample Input:
31

Sample Output:
6

Explanation: Let's break down the distance the snail covers each day:
Day 1: 7-2=5
Day 2: 5+7-2=10
Day 3: 10+7-2=15
Day 4: 15+7-2=20
Day 5: 20+7-2=25
Day 6: 25+7=32
So, on Day 6 the snail will reach 32 feet and get out of the well at day, without slipping back that night.

Answer 1

Look at the explanation and try to understand the outcome.

Hint: You can solve it using a loop. The snail starts down the well and climbs up and slides down until it is out of the well.

Answer 2

var dis=31;
const climb=7;
const slip=2;
var val=0;
var day=1;
while (val<dis){
val += climb;
if (val>dis){
break;
}else{
val -= slip;
}
day++;
}
console.log(day);

This should work.

Answer 3

Thanks it works