Introduction to jsarguments object application _ basic knowledge-js tutorial

This article describes how to use jsarguments objects in detail. For more information, see accessing jsarguments in javascript without explicitly specifying the parameter names. For example:

The Code is as follows:

Function hi (){
If (arguments [0] = "andy "){
Return;
}
Alert (arguments [0]);
}

Use arguments [0] to access the first parameter, and so on.

The arguments object can be used for overloading, and arguments. length can be used to obtain the number of parameters of the function, as shown below:

The Code is as follows:

Function hi (){
If (arguments. length = 1 ){
Alert (arguments [0]);
}
Else if (arguments. length = 2 ){
Alert (arguments [0] + arguments [1]);
}
}