concatenation operator?

[Help]

what's the concatenation operator?

[AdamGundry]

+

http://devedge.netscape.com/library/manuals/2000/javascript/1.3/reference/ops.html#1042582


Adam

[pyro]

The concatenation operator is the +. The + adds numeric operands, but concats strings. To convert a number to a strin, use the value = number.toString() method...

[havik]

example:

var firstname = "John";
var lastname = "Doe";

var fullname = firstname + " " + lastname;

Havik

[Charles]

Originally posted by pyro
To convert a number to a strin[g], use the value = number.toString() method... Or just use the number as a string, a la alert(3.14159) and '0' + 4. In fact, to convert anything to a string just use it as a string. If it's an object then JavaScript will automatically call its toString() method. Primitives work a little differently under the hood but the result is the same.

And JavaScript has two other useful ways to concatenate. The document.write method will take any number of arguments and will concatenate them: document.write('fee', 'fie', 'foe', 'fum'). And the Array.join() method can be very useful: ['fee', 'fie', 'foe', 'fum'].join(', ').