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39 lines
1.2 KiB
JavaScript
39 lines
1.2 KiB
JavaScript
/**
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* Copyright 2013 Facebook, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* @providesModule getDOMNodeID
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*/
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"use strict";
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/**
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* Accessing "id" or calling getAttribute('id') on a form element can return its
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* control whose name or ID is "id". However, not all DOM nodes support
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* `getAttributeNode` (document - which is not a form) so that is checked first.
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*
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* @param {Element} domNode DOM node element to return ID of.
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* @returns {string} The ID of `domNode`.
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*/
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function getDOMNodeID(domNode) {
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if (domNode.getAttributeNode) {
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var attributeNode = domNode.getAttributeNode('id');
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return attributeNode && attributeNode.value || '';
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} else {
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return domNode.id || '';
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}
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}
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module.exports = getDOMNodeID;
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