javascript optional arguments

This article mainly introduces arguments and overloading in Javascript. This article explains Javscript overloading and Javascriptarguments are not an array. If you need them, refer to the language design errors, arguments can be treated as an array. The Code is as follows: Function zero (){Console. log (arguments [0

. [function.] The Arguments.callee optional function parameter is the name of the function object that is currently executing. Indicates that the initial value of the Callee property is the Function object being executed. The Callee property is a member of the arguments object that represents a reference to the function object itself, which facilitates anonymousrecursive function or guarantee the encapsulat

After seeing that everyone is so concerned about these objects in JS, I tried to modify the original text and try to clarify the significance in detail before referring to the above concepts, first, let's talk about the implicit parameter arguments of the function in javascript. Arguments This object represents the function being executed and the parameters of

This article provides a detailed description of the usage of arguments, caller, callee, and apply in js. If you need them, refer to them, I hope it will be helpful for you to refer to the implicit parameter arguments of functions in javascript before referring to the above concepts. Arguments This object represents th

Learn about the arguments object of javascript. For more information, see 1. What is arguments? Arguments is a built-in object in JavaScript. It is odd and often overlooked, but it is actually very important. All major js function libraries use the

Before talking about the above concepts, we should first talk about the implicit parameter of the function in javascript: argumentsArguments This object represents the function being executed and the parameters of the function that calls it.[Function.] arguments [n]Parameter function: option. Name of the Function object currently being executed. N: option. The index of the parameter value starting from 0 to

The arguments object is not an array and accesses a single argument in the same way that it accesses an array element. Index n is actually one of the parameters of the 0...N property of the arguments object. In JavaScript, you do not need to explicitly indicate the parameter names to access them. Such as: The code is as follows Copy Code

semicolon after the first line, which is a common rule, with two exceptions.The first exception is in a scenario involving return, break, and continue statements. If the three keywords are followed by a newline, JavaScript fills the semicolon at the line break.For example:return ture; // JavaScript will parse into: return ; true ; // and the code is meant to be like this: return true;The second exceptio

In object-oriented advanced languages, methods are overloaded. In js, you can use the arguments parameter to disguise it as a function overload. The details are as follows in many advanced object-oriented languages, there is a method overload. Javascript has no way to overload this concept. However, we can use the arguments parameter to disguise it as a function

The JavaScript -- Item11 arguments object you don't know1. What is arguments? Arguments is a built-in object in JavaScript. It is odd and often overlooked, but it is actually very important. All major js function libraries use the argume