Why not program gives an error. As two parameters were required I have pass only one parameter and i-CodePudding

enter image description here Image that I have paste here. As I have pass only one argument as parameter as two were required then why this function works and why not it gives us a error

CodePudding user response：

You are returning 23, the function doesn't utilize both a and b, and therefore won't produce an error for not using both.

CodePudding user response：

JavaScript function parameter rules:

JavaScript functions do not perform type checking on the passed arguments.
JavaScript function definitions do not specify data types for parameters.
JavaScript functions do not check the number of arguments received.