In this short post, we will see why we get and how to solve the “date.getDate() is not a function” Error in Javascript.
The error “date.getDate() is not a function” occurs when we call the method (getDate()) on a value which is not a valid date object. To solve this error, we have to make sure that the method is called only on valid date objects.
Let’s see a demonstration of how this error might occur.
const date = '2022-09-04'
console.log(date.getDate())This will give us an error like this.
TypeError: date.getDate is not a functionThis is because even though the date looks like it’s in the correct date format, it actually just a string.
So we cannot use the getDate() method on a date string.
So how to solve the “date.getDate() is not a function” error?
To use the getDate() method on the above date string, we have to first convert it into a valid date object.
To convert we have to use the new Date() constructor in javascript. This will return us a valid date.
Example:
const date = '2022-09-04'
const validDate = new Date(date)
console.log(validDate.getDate()) // 4Here, we have converted the date (‘2022-09-04’) into a valid Date object using new Date() constructor, and then called the getDate() method on it.
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JavaScript – Get Month Name from Date
Get Tomorrow’s Date using JavaScript – Quick Way
