<script type="text/javascript">
a = 4; b = 12;
arrayMisto = [ "laranja", 34, "casa", true, [1,3,5], a+b ];
var executar = function() {
alert( arrayMisto[0] );
alert( arrayMisto[1] );
alert( arrayMisto[3] );
alert( arrayMisto[4][1] );
alert( arrayMisto[5] );
}
</script>
<button type="button" onclick="executar()">Mostrar array</button>