Usage

Step 1: Add data-purplecoat="foo" and data-purplecoat-label="Hello!" to any element.

Step 2: Add data-purplecoat-toggle="foo" to any clickable element.

Now, go ahead and click this button to show the overlay label. Click again to hide the label.

✓ Click Me

<button data-purplecoat-toggle="foo"> ✓ Click Me </button>