mediawiki-extensions-VisualEditor/modules/ve/ce/ve.ce.js

/**
 * VisualEditor ContentEditable namespace.
 * 
 * All classes and functions will be attached to this object to keep the global namespace clean.
 */
ve.ce = {
	/**
	 * Gets the plain text of a DOM element.
	 * 
	 * @static
	 * @method
	 * @param {HTMLElement} elem DOM element to get the plan text contents of
	 * @returns {String} Plain text contents of DOM element
	 */
	'getDOMText': function( elem ) {
		var	nodeType = elem.nodeType,
			ret = '';

		if ( nodeType === 1 || nodeType === 9 ) {
			// Use textContent || innerText for elements
			if ( typeof elem.textContent === 'string' ) {
				return elem.textContent;
			} else if ( typeof elem.innerText === 'string' ) {
				// Replace IE's carriage returns
				return elem.innerText.replace( /\r\n/g, '' );
			} else {
				// Traverse it's children
				for ( elem = elem.firstChild; elem; elem = elem.nextSibling) {
					ret += ve.ce.getDOMText( elem );
				}
			}
		} else if ( nodeType === 3 || nodeType === 4 ) {
			return elem.nodeValue;
		}

		return ret;
	}
};