Using Mozilla's concatenating strings with delimiter example in Angular2+?

Question

I am wanting to concat an indeterminate amount of string arguments with a specified delimiter, so I Google'd the issue and came across a page on Mozilla's website instructing on how to do just that using the arguments object.

function myConcat(separator) {
  var args = Array.prototype.slice.call(arguments, 1);
  return args.every(x => x === '') ? '' : args.join(separator);
}

When I tried this in a normal JS compiler such as repl.it, it worked perfectly! I couldn't be happier to have it proven, tried and tested.

However, when plugging the code into my Angular 6 app, I get the usual error stating that when calling the function, I am passing in too many arguments and that it only expects the one.

Is there anything I can do to get this working in Angular 6?

Have you tried using rest parameters instead of relying on the arguments object? — not a number
– not a number, Commented Oct 19, 2018 at 10:52
something like this function myConcat(separator, ...strings) { return strings.every(x => x === '') ? '' : strings.join(separator); } — not a number
– not a number, Commented Oct 19, 2018 at 10:55

not a number · Accepted Answer · 2018-10-19 11:03:10Z

2

It might work if you use rest parameters instead of the arguments object:

function myConcat(separator, ...strings) {
 return strings.every(x => x === '') ? '' : strings.join(separator);
}

edited Oct 19, 2018 at 11:03

answered Oct 19, 2018 at 10:57

not a number

2562 silver badges4 bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

physicsboy Over a year ago

Aha! I'd been looking for how I could pass an arg along with a long arg! I must have had it the wrong way around when I tried (...args, sep).

not a number Over a year ago

@physicsboy Yes, rest parameters have to be the last argument to a function.

physicsboy Over a year ago

I shall bear that in mind for future! Thanks for the help :-)

Collectives™ on Stack Overflow

Using Mozilla's concatenating strings with delimiter example in Angular2+?

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related