如何在JavaScript中输出调用对象? [英] How to output call object in javascript?
问题描述
调用对象使用一个名为arguments的属性进行初始化,该属性引用了Arguments对象函数
是否允许使用console.log或alert()方法输出JavaScript中调用对象的结构(或值?)
当人们说'一个调用对象',它是一个概念还是一个对象?
我相信他们指的是调用方法/函数的对象。
可以通过 this
$ b
< a onclick =foo()>点击我< / a>
函数foo(){
this.style.color ='#cc0000';
alert(arguments.length);
}
此代码会将锚点的文本颜色更改为#cc0000,然后警报0。
while I was reading a javascript book, I read the following sentence.
"The call object is initialized with a property named arguments that refers to the Arguments object for the function"
am I allow to output the structure (or values?) of a call object in javascript using console.log or alert() method??
when people say 'a call object', is it a concept or an object?
I believe they are referring to the object calling the method/function.
This can be referenced by the this
keyword
<a onclick="foo()">click me</a>
function foo(){
this.style.color='#cc0000';
alert(arguments.length);
}
This code would change the text color of the anchor to '#cc0000' and alert 0.
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