Runtime Error

AttrValueRequired

No value was provided to the data-attr attribute.

The data-attr attribute must have a value, representing either an expression (if a key is provided), or an object of key-value pairs, where the keys are attribute names and the values are expressions.

Example:

1<div data-attr-disabled="$foo"></div>

Alternative syntax:

1<div data-attr="{disabled: foo}"></div>

See the docs for the data-attr attribute.