ltchronus

摘要： 4.4 参数当函数被调用时，会得到一个参数列表，即arguments数组(并不是真的数组，只有length属性，不含方法)。// Make a function that adds a lot of stuff.// Note that defining the variable sum inside of// the function does not interfere with the sum// defined outside of the function. The function// only sees the inner one.var sum = function ( ) . 阅读全文