请问“this[i+1]=initArray.arguments[i]“是什么意思，还有initArray是函数名，怎么又定义了同名的数组了？请赐教

这样写不是等价的吗？
<script language=JavaScript>
today=new Date();
var d=new Array(    
"星期日",
"星期一",
"星期二",
"星期三",
"星期四",
"星期五",
"星期六");
document.write(
"<font color=##000000 style='font-size:9pt;font-family: 宋体'> ",
today.getYear(),"年",
today.getMonth()+1,"月",
today.getDate(),"日",
d[today.getDay()+1],
"</font>" ); 
</script>