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Editorial Team
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Asked: 2026-05-14T20:23:29+00:00

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

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   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 me what is the ret = [],..,… syntax? Initializing array?

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1 Answer

  1. Editorial Team

    You’re right. This code:

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

    Could 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.

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