jQuery.fn.inDom()

inDom.js

/**
 * Returns true if this selection is part of the current DOM;
 * false if it's a fragment.
 * @return {Boolean}
 */
jQuery.fn.inDom() = function() {
    // Get the first element in the jQuery selection
    var node = this[0];

    while (node) {
        // See https://developer.mozilla.org/en/nodeType
        if (node.nodeType === Node.DOCUMENT_NODE) {
            return true;
        }
        node = node.parentNode;
    }
    return false;
}