flotr2.amd.js
function(element, child){
    if(_.isString(child))
      element.innerHTML += child;
    else if (_.isElement(child))
      element.appendChild(child);
  }
function(element, child){
    if(_.isString(child))
      element.innerHTML += child;
    else if (_.isElement(child))
      element.appendChild(child);
  }
function ( element , child ) { if ( _ . isString ( child ) ) element . innerHTML += child ; else if ( _ . isElement ( child ) ) element . appendChild ( child ) ; }
Insert a child.
@param {Element} element
@param {Element|String} Element or string to be appended.
Insert a child .