modernizr/src/createElement.js

Modernizr is a JavaScript library that detects HTML5 and CSS3 features in the user’s browser.

define(['isSVG'], function(isSVG) {
  /**
   * createElement is a convenience wrapper around document.createElement. Since we
   * use createElement all over the place, this allows for (slightly) smaller code
   * as well as abstracting away issues with creating elements in contexts other than
   * HTML documents (e.g. SVG documents).
   *
   * @access private
   * @function createElement
   * @returns {HTMLElement|SVGElement} An HTML or SVG element
   */

  function createElement() {
    if (typeof document.createElement !== 'function') {
      // This is the case in IE7, where the type of createElement is "object".
      // For this reason, we cannot call apply() as Object is not a Function.
      return document.createElement(arguments[0]);
    } else if (isSVG) {
      return document.createElementNS.call(document, 'http://www.w3.org/2000/svg', arguments[0]);
    } else {
      return document.createElement.apply(document, arguments);
    }
  }

  return createElement;
});