Whenever I click a button instead of increasing the steps by 1, it increases it by 4. Please help

Question

https://code.sololearn.com/WG15BGkIy3X8/?ref=app

Answer 1

for (o=0;o<outcome_span.length;o++){}
var stairs = {
A lot of code
}

I think must be

for (o=0;o<outcome_span.length;o++){
var stairs =
A lot of code
}

Answer 2

You are assigning 4 event listeners to each element.

for (let a=0;a<document.querySelectorAll(".direction").length;a++){
direction[0].addEventListener("click",function(){return stairs.up()})
direction[1].addEventListener("click",function(){return stairs.down()})
const upup= direction[2].addEventListener("click",function(){return stairs.upup()})
const downdown= direction[3].addEventListener("click",function(){return stairs.downdown()})
}