CODEWITHSUNDEEP
typescript
Krisna
Krisna

Reputation: 3423

Typescript: getTime is not function

I am using Typescript for my function. I have two sets of data in the database, one is date and one is time. Both are expecting strings.

I made one POST request when the user chooses the date, and that time will be selected for the user. I made a helper function for that, when the delivery time will start, it means user selecting time is expired, in which case I show them an alert on the front-end that shows.

"Your selected time expired!" .

I am trying to pass default date parameter like this now = new Date() in my function instead of use directly new Date(). When I console log typeof now it shows the parameter is function.

PS: I am still new in Typescript. It will be great learning for me if someone give me detail about my mistake.

This is my function throws the error

const isStartimeExpired = (
    date: string,
    time: string,
    now = new Date(),
) => {
    const [startTime] = time.split(' - ');
    const newDate = new Date(`${date}T${startTime}`);
        
    if (newDate.getTime() < now.getTime()) { // this throws an error that getTime() is not function 
        return true;
    } else if (isEmptyString(date) || isEmptyString(time)) {
        return false;
    }

    return false;
};

This one works

const isStartimeExpired = (
    date: string,
    time: string,
) => {
    const [startTime] = time.split(' - ');
    const newDate = new Date(`${date}T${startTime}`);
    
    if (newDate.getTime() < new Date().getTime()) { // this one does not throw any error
        return true;
    } else if (isEmptyString(date) || isEmptyString(time)) {
        return false;
    }

    return false;
};

Upvotes: 0

Views: 230

Answers (1)

Ken La
Ken La

Reputation: 170

You have to type the parameter now into a date, else the type of the parameter is any.

const isStartimeExpired = (
    date: string,
    time: string,
    now: Date = new Date(),
) => {
    const [startTime] = time.split(' - ');
    const newDate = new Date(`${date}T${startTime}`);
        
    if (newDate.getTime() < now.getTime()) {
        return true;
    } else if (isEmptyString(date) || isEmptyString(time)) {
        return false;
    }

    return false;
};

Upvotes: 1

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