I have a TypeScript problem:
let classStart: keyof typeof monday;
const now = new Date();
console.log(now.getHours());
for (let i = Object.keys(monday).length - 1; i > 0; i--) {
let time: any = Object.keys(monday)[i].split(":");
// eslint-disable-next-line eqeqeq
if (time[0] == now.getHours()) {
if (time[1] <= now.getMinutes()) {
console.log(Object);
classStart = Object.keys(monday)[i];
console.log();
} else {
//classStart = Object.keys(monday)[i - 1];
console.log(Object.keys(monday)[i - 1]);
}
// console.log(monday[classStart]);
}
}
This is my code, I need to use the Object.keys(monday)[i] (which is a string) as a property for monday[].
If I use the let classStart: keyof typeof monday; I can assign e.x "7:25" to classStart but I can't assign it using a function like Object.keys(monday)[i];. Why?
The JSON where I get the data from looks like this:
...
"7:25": ["B1", "B2", "B3","B4"],
...
It is a typescript problem. I'm quite sure.
I think the main problem, that no one can guess what is the type of monday, (TypeScript too). So if you specify its type, the problem will become much more clearer
I suspect that
monday: {
[HHMM:string]: string[]
}
So I slightly altered your code
const mondayInput = {
"10:13": ["B1"],
"7:25": ["B1", "B2", "B3","B4"]
};
const monday = mondayInput as Record<string,string[]>
//fixed date time for test proposes
let now = new Date("2013/01/01 10:10:00")
console.log(now, now.getHours(), now.getMinutes());
function HHMMtoInt(x:string){const [HH, MM] = x.split(":"); return parseInt(HH) * 100 + parseInt(MM)}
const times = Object.keys(monday).sort((a,b) => HHMMtoInt(a)-HHMMtoInt(b));
for (let i = 0;i < times.length; i++) {
const timeHHMM = times[i];
let time = timeHHMM.split(":").map(x => parseInt(x));
let timeInterval: number | undefined;
console.log("Compare", time[0], time[1], now.getHours(), now.getMinutes())
if (time[0] == now.getHours()) {
if (time[1] <= now.getMinutes()) {
timeInterval = i;
} else {
timeInterval = i - 1;
}
}
if(timeInterval !== undefined && timeInterval >= 0 ){
console.log("Time", times[timeInterval], "Classes", monday[times[timeInterval]] );
}
}
Playground Link: Provided