Have Geek Brain

Javascript syntax

   var ret = [] 
             ,xresult = document.evaluate(exp, rootEl, null,
                         XPathResult.UNORDERED_NODE_ITERATOR_TYPE, null)
             ,result = xresult.iterateNext();
   while (result) {
     ret[ret.length]= result;
     result = xresult.iterateNext();
   }

can anyone explain to me what is the ret = [], .., ... syntax? Array initialization?

+2


a source to share


1 answer


You're right. This code:

var ret = [] 
             ,xresult = document.evaluate(exp, rootEl, null,
                         XPathResult.UNORDERED_NODE_ITERATOR_TYPE, null)
             ,result = xresult.iterateNext();

Can be rewritten as:



var ret = [];
var xresult = document.evaluate(exp, rootEl, null,
                         XPathResult.UNORDERED_NODE_ITERATOR_TYPE, null);
var result = xresult.iterateNext();

var foo = [];

initializes foo as an empty array.

+2


a source






More articles:


All Articles