<!DOCTYPE HTML>
<html>
<head><meta charset="windows-1251" /> </head>
<body>
<select>
<option value=0>Value 0</option>
<option value=1>Value 1</option>
</select>
<select>
<option value=0>Value 0</option>
<option value=1>Value 1</option>
</select>
<button>Проверить</button>
<script>
test=function(){
var sels = document.getElementsByTagName('select'), arr=[]
for(var i=0; i<sels.length; i++) arr.push(sels[i].value)
try{arr.forEach(function(el){if(el<1) throw false})}catch(e){return e}
return true
}
document.querySelector('button').onclick = function(){alert(test())};
</script>
</script>
</body>
</html>