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