Why can't I call an array method on a function's arguments?

Question

I have a function that can accept any number of arguments...

const getSearchFields = () => {        
    const joined = arguments.join(\'/\'); 
};
         


        

Answer 1

arguments is a pseudo-array, not a real one. The join method is available for arrays.

You'll need to cheat:

var convertedArray = [];

for(var i = 0; i < arguments.length; ++i)
{
 convertedArray.push(arguments[i]);
}

var argsString = convertedArray.join('/');

Similar to other posts, you can do the following as shorthand:

var argsString = Array.prototype.join.call(arguments, "/");