An array of JS storage parameters Arguments

The JS function has an array of stored parameters arguments , and the parameters obtained by all functions are saved to the array by the compiler. So our JS version of the support parameter default value of the function can be a different way to implement

function Simue () {varA = arguments[0] ? arguments[0] :1; varb = arguments[1] ? arguments[1] :2;
Console.log (arguments); returnA +b;} Console.log (Simue ()); //Output 3Console.log (Simue (Ten) );//OutputConsole.log (Simue (Ten, -) );//Output

An array of JS storage parameters Arguments