function length
Description
The length property indicates the number of named arguments that the function expects.
Example
function myFunction1(name){/* ww w . jav a 2s. c o m*/
console.log(name);
}
function myFunction2(num1, num2){
return num1 + num2;
}
function myFunction3(){
console.log("hi");
}
console.log(myFunction1.length); //1
console.log(myFunction2.length); //2
console.log(myFunction3.length); //0
The code above generates the following result.
