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Viewed 12k times. In short How can I make a file's name contain the user's local time upon downloading it? What about the download having the user's time in the name? How can I get the user's local time as the value for the download attribute? Improve this question.
Daniel Springer. Date objects are static. The computer time is ticking, but date objects are not. You cannot omit month.
If you supply only one parameter it will be treated as milliseconds. The reference contains descriptions and examples of all Date properties and methods. Report Error. Epoch time was chosen as a standard for computers to measure time by in earlier days of programming, and it is the method that JavaScript uses. It is important to understand the concept of both the timestamp and the date string, as both may be used depending on the settings and purpose of an application.
So far, we learned how to create a new Date instance based on the current time, and how to create one based on a timestamp. In total, there are four formats by which you can create a new Date in JavaScript. In addition to the current time default and timestamp, you can also use a date string, or specify particular dates and times.
In the date and time method, our seconds and milliseconds are set to 0. If any number is missing from the Date creation, it will default to 0.
However, the order cannot be changed, so keep that in mind if you decide to leave off a number. You may also notice that the month of July is represented by 6 , not the usual 7. This is because the date and time numbers start from 0 , as most counting in programming does. See the next section for a more detailed chart. Once we have a date, we can access all the components of the date with various built-in methods.
The methods will return each part of the date relative to the local timezone. Each of these methods starts with get , and will return the relative number. Below is a detailed table of the get methods of the Date object. Sometimes it may be necessary to extract only part of a date, and the built-in get methods are the tool you will use to achieve this. The built-in Date methods that begin with get allow us to access date components that return the number associated with what we are retrieving from the instantiated object.
For all the get methods that we learned about above, there is a corresponding set method. Where get is used to retrieve a specific component from a date, set is used to modify components of a date. Below is a detailed chart of the set methods of the Date object.
We can use these set methods to modify one, more, or all of the components of a date. Show it using alert. So February has number 1. Show a weekday. The method date. European weekday. Which day of month was many days ago? Last day of month? Parameters: year — four-digits year, for instance How many seconds have passed today? How many seconds till tomorrow? Format the relative date. Write a function formatDate date that should format date as follows: If since date passed less than 1 second, then "right now".
Otherwise, if since date passed less than 1 minute, then "n sec. Otherwise, if less than an hour, then "m min. Otherwise, the full date in the format "DD. YY HH:mm". That is: "day. Previous lesson Next lesson. Comments read this before commenting… If you have suggestions what to improve - please submit a GitHub issue or a pull request instead of commenting. If you can't understand something in the article — please elaborate.
Chapter Data types. Lesson navigation Creation Access date components Setting date components Autocorrection Date to number, date diff Date.
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