Question

I want to test if a class exists in the and if it does then execute the script within the statement using javascript/google closure. Problem is my current code returns undefined so I was wondering if anyone could give me some advice?

if ( goog.dom.classes.has('html', 'pe') ) {

    var searchCtn = goog.dom.getElementsByClass('search');
    var headerWrapper = goog.dom.getElementByClass('header');
    goog.dom.append(headerWrapper,searchCtn);
}

Answer 1

‘html’ is not a valid element object. Try passing in document.documentElement or use google to get the element by classname.

if ( goog.dom.classes.has(document.documentElement, 'pe') ) {      
  var searchCtn = goog.dom.getElementsByClass('search');     
  var headerWrapper = goog.dom.getElementByClass('header');     
  goog.dom.append(headerWrapper,searchCtn); 
} 

or

if(goog.dom.getElementsByClass('pe')){
  var searchCtn = goog.dom.getElementsByClass('search');     
  var headerWrapper = goog.dom.getElementByClass('header');     
  goog.dom.append(headerWrapper,searchCtn); 
}