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Kylie Soderblom
3,890 PointsWhat is the functional difference between Array.prototype.join() and Array.prototype.toString() ?
inStock.join(", ") does make a comma and a space between array elements while inStock.toString(", ") ignores the space and only has a comma between array elements.
Is there any other reason to use join instead of toString?
1 Answer
Peter Vann
36,427 PointsHi Kylie!
The biggest difference is that toString() just builds a string from an array with elements separated by only a single comma (and no spaces). In other words, there are no options.
With join(), you can specify ANY separator of your choice.
Keep in mind, however, join() and toString() would give the same result (when join is called without an argument).
So this:
var cars = ["Saab", "Volvo", "BMW"];
console.log( cars.join("---") );
Would log the string:
Saab---Volvo---BMW
to the console.
More info:
https://www.includehelp.com/code-snippets/join-vs-toString-methods-in-javascript.aspx
I hope that helps.
Stay safe and happy coding!
Reggie Williams
Treehouse TeacherReggie Williams
Treehouse TeacherHey Kylie Soderblom the main difference is that the join method takes a seperator parameter while toString doesn't take any. Without the parameter given, their behavior is identical