# Optional parameters

**URL:** <https://forum.kirupa.com/t/optional-parameters/41569>\
**Category:** flash\
**Created:** [January 30, 2004, 5:35pm UTC](https://forum.kirupa.com/t/optional-parameters/41569 "2004-01-30T17:35:16Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![El\_Bicho](https://avatars.discourse-cdn.com/v4/letter/e/dbc845/32.png) [@El\_Bicho](https://forum.kirupa.com/u/El_Bicho)\
**Post date:** [January 30, 2004, 5:35pm UTC](https://forum.kirupa.com/t/optional-parameters/41569/1 "2004-01-30T17:35:16Z")

</div>

I have this function:

```auto

MovieClip.prototype.changeColor = function(mode, kl, kh, rl, rh, gl, gh, bl, bh) {
bla, bla, bla...
}

```

How can I make all parameters optional except the first one?

Thanks