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The problem is that your buttonbuttons are using the on-click attribute, which isn't valid. You need to use onclick instead.
on-click
onclick
Replace:
on-click="tripleCoverDlFold1()"
with:
onclick="tripleCoverDlFold1()"
The problem is that your button are using the on-click attribute, which isn't valid. You need to use onclick instead.
The problem is that your buttons are using the on-click attribute, which isn't valid. You need to use onclick instead.
