The ability to style checkboxes with CSS varies across browsers.
To ensure that checkboxes look the same everywhere, we use a custom DOM.
Pay close attention to the markup, because all elements must exist for the
styles to work.
Groups of checkboxes should be marked up using the fieldset and legend
element. This helps someone using assistive technology to understand the
question they're answering with the group of checkboxes. The fieldset is
placed around the whole group and the legend contains the question.
Custom checkboxes are created by applying the
.slds-checkbox class to
<label> element. To remain accessible to all user agents, place
type="checkbox" inside the
<label> element. The
is then visually hidden, and the styling is placed on a span with
.slds-checkbox--faux class. The styling of the span changes based
on whether the checkbox is selected or focused by using a pseudo-element.
A second span with
.slds-form-element__label contains the label text.
When a single checkbox is required,
<div class="slds-checkbox"> should
<abbr class="required" title="required">*</abbr> added to the DOM,
directly before the
<input type="checkbox" /> for visual indication
that the checkbox is required.
When a checkbox group is required, the
<fieldset> should receive the
<legend> should then get
<abbr class="required" title="required">*</abbr> added to the DOM for
visual indication that the checkbox group is required.
As SLDS checkboxes rely on the :checked psuedo selector, and the
CSS class on the input will be necessary to implement this in SLDS.
true on the input.
var checkbox = document.getElementById('checkbox-indeterminate-01');
checkbox.indeterminate = true;