[javascript] Add characters to a string in Javascript

I need to add in a For Loop characters to an empty string. I know that you can use the function concat in Javascript to do concats with strings

var first_name = "peter"; 
var last_name = "jones"; 
var name=first_name.concat(last_name) 

but with my example it doesn't work. Any idea how to do it another way ?

my code :

    var text ="";
    for (var member in list) {
            text.concat(list[member]);
    }

To use String.concat, you need to replace your existing text, since the function does not act by reference.

var text ="";
for (var member in list) {
        text = text.concat(list[member]);
}

Of course, the join() or += suggestions offered by others will work fine as well.

You can also keep adding strings to an existing string like so:

var myString = "Hello ";
myString += "World";
myString += "!";

the result would be -> Hello World!

Simple use text = text + string2

simply used the + operator. Javascript concats strings with +

It sounds like you want to use join, e.g.:

var text = list.join();