undefined item in json object

I'm trying to output all values in a JSON list with `for`each, and every single time this mysterious "undefined" variable pops up. Take a look: HTML: JavaScript: var lel = { 1: { "some": "json", "list": "that", "says": "undefined", }, } var s; for(i in lel[1]) { s+= '' + i + '' + ": " + lel[1][i] + "
"; } document.getElementById('1').innerHTML = s; Result (in span) undefined**some**: json **list**: that **says**: undefined Where is that "undefined" thing coming from?
Depending on your browser (IE in particular), you'll want to remove the trailing commas in your array. It's a syntax error in some cases.

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