luhn-generator
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A generator of numbers that passes the validation of Luhn algorithm or Luhn formula, also known as the 'modulus 10' or 'mod 10' algorithm
42 lines (37 loc) • 1.11 kB
JavaScript
import AbstractVirtualNode from '../../core/base/virtual-node/abstract-virtual-node';
import { getNodeFromTree, querySelectorAll } from '../../core/utils';
import focusDisabled from './focus-disabled';
/**
* Determines if an element is focusable without considering its tabindex
* @method isNativelyFocusable
* @memberof axe.commons.dom
* @instance
* @param {HTMLElement|VirtualNode} el The HTMLElement
* @return {Boolean} True if the element is in the focus order but wouldn't be
* if its tabindex were removed. Else, false.
*/
function isNativelyFocusable(el) {
const vNode = el instanceof AbstractVirtualNode ? el : getNodeFromTree(el);
if (!vNode || focusDisabled(vNode)) {
return false;
}
switch (vNode.props.nodeName) {
case 'a':
case 'area':
if (vNode.hasAttr('href')) {
return true;
}
break;
case 'input':
return vNode.props.type !== 'hidden';
case 'textarea':
case 'select':
case 'summary':
case 'button':
return true;
case 'details':
return !querySelectorAll(vNode, 'summary').length;
}
return false;
}
export default isNativelyFocusable;