Function to get the input provided to momentjs

问题

Is there any function to get the input that was provided to moment()

In the example below, inputDate becomes null.

var date = moment("invalid date");
if(!data.isValid()){
  return { message: "Invalid date", inputDate: date }
}

I can access the input using internals i.e. date._i but was wondering if there's any function that would return the input provided to moment constructor.

回答1:

You can use creationData()

After a moment object is created, all of the inputs can be accessed with creationData() method:

moment("2013-01-02", "YYYY-MM-DD", true).creationData() === {
    input: "2013-01-02",
    format: "YYYY-MM-DD",
    locale: Locale obj,
    isUTC: false,
    strict: true
}

Here a live example:

var date = moment("invalid date", moment.ISO_8601);
console.log(date.creationData().input);

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.19.4/moment.min.js"></script>

As a side note:

• I've used moment.ISO_8601 in my snippet to prevent Deprecation Warning, as shown here.
• Something quite similar was asked (but not a duplicate) was asked here.

来源：https://stackoverflow.com/questions/47907053/function-to-get-the-input-provided-to-momentjs