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- function solve() {
- let box = document.getElementById("info")
- let dep = document.getElementById("depart");
- let arr = document.getElementById("arrive");
- let currentId="depot";
- let currentName="";
- function depart() {
- fetch(`https://judgetests.firebaseio.com/schedule/${currentId}.json`)
- .then(res=>res.json())
- .then(departSuccess)
- .catch(err=>{ box.textContent="Error";
- arr.disabled=true;
- dep.disabled=true;
- })
- }
- function arrive() {
- arr.disabled=true;
- dep.disabled=false;
- box.textContent=`Arriving at ${currentName}`
- }
- function departSuccess(data){
- let {name, next}=data;
- currentId=next;
- currentName=name;
- dep.disabled=true;
- arr.disabled=false;
- box.textContent=`Next stop: ${currentName}`
- }
- return {
- depart,
- arrive
- };
- }
- let result = solve();
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