把let改成var就通过检测了
let zjMBtn = document.getElementById('zjtaiduola')
let zjABtn = document.getElementById('zjtaishaola')
let zjNum = Number(document.getElementById('zjsl').innerText)
let klMBtn = document.getElementById('kltaiduola')
let klABtn = document.getElementById('kltaishaola')
let klNum = Number(document.getElementById('klsl').innerText)
let total = document.getElementById('total')
function getTotal(){
total.innerText = 28 * zjNum + 5 * klNum
}
zjMBtn.onclick = function(){
if(zjNum == 0){
zjNum = 0
}else{
zjNum--
}
document.getElementById('zjsl').innerText = zjNum
getTotal()
}
zjABtn.onclick = function(){
zjNum ++
document.getElementById('zjsl').innerText = zjNum
getTotal()
}
klMBtn.onclick = function(){
if(klNum == 0){
klNum = 0
}else{
klNum--
}
document.getElementById('klsl').innerText = klNum
getTotal()
}
klABtn.onclick = function(){
klNum ++
document.getElementById('klsl').innerText = klNum
getTotal()
}