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fix(isElement): return boolean value rather than truthy value.
angular.isElement currently returns a truthy object/function, or false. This patch aims to correct this behaviour by casting the result of the isElement expression to a boolean value via double-negation. Closes #4519 Closes #4534
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2 changed files with 15 additions and 2 deletions
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@ -565,9 +565,9 @@ var trim = (function() {
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* @returns {boolean} True if `value` is a DOM element (or wrapped jQuery element).
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*/
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function isElement(node) {
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return node &&
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return !!(node &&
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(node.nodeName // we are a direct element
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|| (node.on && node.find)); // we have an on and find method part of jQuery API
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|| (node.on && node.find))); // we have an on and find method part of jQuery API
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}
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/**
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@ -1079,4 +1079,17 @@ describe('angular', function() {
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}
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});
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describe('isElement', function() {
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it('should return a boolean value', inject(function($compile, $document, $rootScope) {
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var element = $compile('<p>Hello, world!</p>')($rootScope),
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body = $document.find('body')[0],
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expected = [false, false, false, false, false, false, false, true, true],
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tests = [null, undefined, "string", 1001, {}, 0, false, body, element];
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angular.forEach(tests, function(value, idx) {
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var result = angular.isElement(value);
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expect(typeof result).toEqual('boolean');
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expect(result).toEqual(expected[idx]);
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});
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}));
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});
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});
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