Js arguments object

Js arguments object

 

In javascript, you do not need to explicitly specify the parameter names to access them. For example:

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 parameters of the function.

Number, as shown below:

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