Note: Below is the original page from the Bootlint documentation, some of the info here might not apply to Bootlint-NG!

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W014

Carousel controls and indicators should use href or data-target to reference an element with class .carousel.

For proper processing of click events within a carousel, each anchor within .carousel-control should include either a href or data-target attribute with the ID of the corresponding element within the carousel.

Wrong:

<a class="left carousel-control" role="button" data-slide="prev">

Right:

<a class="left carousel-control" href="#carousel-example-generic" role="button" data-slide="prev">

Also Right:

<a class="left carousel-control" data-target="#carousel-example-generic" role="button" data-slide="prev">