javascript - Looping Through className index not working...Alternatives? -

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wins.push(document.getelementsbyclassname("page")[x].attributes["id"].value);

this code for() loop in javascript, using variable 'x'. unlike google chrome, firefox , opera don't seem comprehending fact variable index of class wish attribute "id" from.

is there alternative method?

i think should work out 

function findpageclasses()    {      var pageclasses= document.getelementsbyclassname("page");      for(var i=0; i<pageclasses.length; i++)         {           wins.push(pageclasses[i].attributes["id"].value);         }     }

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