Question

Currently I am working on an plugin for jQuery. In some jQuery functions you can pass an duration (e.g. '500ms', '1s', 'fast') parameter in.

I suppose there is a function within jQuery which pares that value and returns a value in ms? (so 1s would return 1000 or something).

Which method would this be, and is it possible to use this in my own plugin? So I can fire an callback after '1s' or 'fast' like some other methods as animate currently does.

Answer 1

You can always have a look at the source code. There you can see that .animate() calls a method jQuery.speed which uses jQuery.fx.speeds:

speeds: {
    slow: 600,
    fast: 200,
    // Default speed
    _default: 400
},

jQuery.speed seems to be useful in this regard, though I don’t see any code which converts '1s' into 1000. Are you sure jQuery is doing this?