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Contents
/* global aria, dom */
/**
* Validate the value of an ARIA attribute
* @method validateAttrValue
* @memberof axe.commons.aria
* @instance
* @param {HTMLElement} node The element to check
* @param {String} attr The name of the attribute
* @return {Boolean}
*/
aria.validateAttrValue = function validateAttrValue(node, attr) {
'use strict';
var matches,
list,
value = node.getAttribute(attr),
attrInfo = aria.lookupTable.attributes[attr];
var doc = dom.getRootNode(node);
if (!attrInfo) {
return true;
}
if (attrInfo.allowEmpty && (!value || value.trim() === '')) {
return true;
}
switch (attrInfo.type) {
case 'boolean':
case 'nmtoken':
return (
typeof value === 'string' &&
attrInfo.values.includes(value.toLowerCase())
);
case 'nmtokens':
list = axe.utils.tokenList(value);
// Check if any value isn't in the list of values
return list.reduce(function(result, token) {
return result && attrInfo.values.includes(token);
// Initial state, fail if the list is empty
}, list.length !== 0);
case 'idref':
return !!(value && doc.getElementById(value));
case 'idrefs':
list = axe.utils.tokenList(value);
return list.some(token => doc.getElementById(token));
case 'string':
// Not allowed empty except with allowEmpty: true
return value.trim() !== '';
case 'decimal':
matches = value.match(/^[-+]?([0-9]*)\.?([0-9]*)$/);
return !!(matches && (matches[1] || matches[2]));
case 'int':
return /^[-+]?[0-9]+$/.test(value);
}
};
Version data entries
271 entries across 271 versions & 1 rubygems