different types of assignments

<!DOCTYPE HTML>
<HTML>
<HEAD>
<SCRIPT lang = "JavaScript">
    var bobos = [40, 40, 40, 40, 40, 40, 40, 40, 40, 40, 40];
// 0..11
    var bobo = [];
    for (var x = 0; x<11; x++) {bobo[x]=40;}
    document.write("bobos\' run : "+bobos+"<br/>bobo\'s run : "+bobo);
</SCRIPT>
</HEAD>
</HTML>