Fold button submits forms

[mstenta]

If you use the fold property to collapse a layer group, and the map is within a form, clicking the arrow (which is a <button>) to expand the group submits the form.

I think we just need to add e.preventDefault(); to fix this. Here is the click function:

ol-layerswitcher/src/ol-layerswitcher.js

Line 308 in 3273500

btn.onclick = function (e) {

For reference, here is the click callback for the main LayerSwitcher button, which does have a e.preventDefault(); in it:

ol-layerswitcher/src/ol-layerswitcher.js

Line 57 in 3273500

button.onclick = function(e) {

[mstenta]

I created a pull request for review: #260

[walkermatt]

@mstenta thanks for reporting and the PR 👍

[mstenta]

Thanks @walkermatt for reviewing and merging!

Do you foresee a new tagged release in the near future? No rush - just curious. I'm referencing a specific commit in my package.json now.

[walkermatt]

Just published https://www.npmjs.com/package/ol-layerswitcher/v/3.5.0 🎉

[mstenta]

Terrific! Thank you!