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42 lines
1.2 KiB
JavaScript
42 lines
1.2 KiB
JavaScript
define(['../internal/isObjectLike', './isPlainObject', '../support'], function(isObjectLike, isPlainObject, support) {
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/** Used for native method references. */
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var objectProto = Object.prototype;
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/**
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* Used to resolve the `toStringTag` of values.
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* See the [ES spec](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.prototype.tostring)
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* for more details.
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*/
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var objToString = objectProto.toString;
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/**
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* Checks if `value` is a DOM element.
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*
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* @static
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* @memberOf _
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* @category Lang
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* @param {*} value The value to check.
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* @returns {boolean} Returns `true` if `value` is a DOM element, else `false`.
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* @example
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*
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* _.isElement(document.body);
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* // => true
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*
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* _.isElement('<body>');
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* // => false
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*/
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function isElement(value) {
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return (value && value.nodeType === 1 && isObjectLike(value) &&
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objToString.call(value).indexOf('Element') > -1) || false;
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}
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// Fallback for environments without DOM support.
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if (!support.dom) {
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isElement = function(value) {
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return (value && value.nodeType === 1 && isObjectLike(value) && !isPlainObject(value)) || false;
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};
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}
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return isElement;
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});
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