对输出格式使用相同的解析格式

Question

With libary moment there is option to bring a array of formating options and momentjs use the best match for parsing the input.

For Example:

var date = moment("29-06-1995", ["MM-DD-YYYY", "DD-MM", "DD-MM-YYYY"]);

but what if I want the take the same format that using in parsing for output formating.

var dateText = date.format('selected parse')

How do I know which format moment choose to use?

Answer 1

Currently there is no exposed function for getting the chosen format, however there is a "private" field named _f that contains this information.

var m = moment("29-06-1995", ["MM-DD-YYYY", "DD-MM", "DD-MM-YYYY"]);
m._f  // "DD-MM-YYYY"

If you use this, be careful when updating versions of moment. Private fields are not guaranteed to be maintained, and could break between versions.

I've logged this as a feature request for future moment.js functionality.