JavaScript隐含参数arguments 的相关内容

文章 2023-04-20 来自：开发者社区

JavaScript中的隐含参数arguments

在调用函数时，浏览器每次都会传递进两个隐含的参数:函数的上下文对象this（关于this指向）装实参的对象argumentsarguments是一个类数组对象(并非数组),它也可以通过索引来操作数据，也可以获取长度。在调用函数时，我们所传递的实参都会在arguments中保存arguments.length可以用来获取实参的长度我们即使不定义形参，也可以通过arguments来使用实参，只不过比....

文章 2022-07-10 来自：开发者社区

JavaScript中的隐含参数arguments

在调用函数时，浏览器每次都会传递进两个隐含的参数:函数的上下文对象this（关于this指向）装实参的对象argumentsarguments是一个类数组对象(并非数组),它也可以通过索引来操作数据，也可以获取长度。在调用函数时，我们所传递的实参都会在arguments中保存我们即使不定义形参，也可以通过arguments来使用实参，只不过比较麻烦arguments[0]表示第一个实参argum....

文章 2017-11-14 来自：开发者社区

javascript:传递给函数的隐含参数:arguments

众所周知，js是脚本语言，脚本语言的一个特点就是极其灵活。有时“灵活”到使我这种习惯c系主流语言的人不得不佩服脚本的强大。比如这里要讲到的arguments参数。本人第一次看到这个东东的时候，以为就是“变相”的普通参数，只不过不用在定义函数的时候明确声明而已。不过，代码是廉价的（Code is cheap.）看代码： Code 代码运行后怎么样，不错，这里的length实在是很奇怪，对不...

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更新时间 2024-04-30 13:23:22

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