Arguments对象的应用
在一个函数体内,标识符arguments具有特殊含义,它是调用对象的一个特殊属性,用来引用Arguments对象。Arguments对象像数组,可以按照数字获取传递给函数的参数值。
例:
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callee属性
Arguments对象定义了callee属性,用来引用当前正在执行的函数。这对未命名的函数调用自身非常有用。
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函数的length属性是指要求的参数个数(arguments.callee.length),而arguments.length的是指实际传递的参数个数(arguments.length)。