Question

I have this bit of code:

            var has_logger = (window.console && window.console.log);
            if (has_logger) {
                window.console.log(data);
            }

has_logger, instead of being a boolean value, is actually initialised to a function object ( function log() { [native code] } )

My questions:

• There is no need to test for the console.log in modern browsers, correct?

• What is the proper way to initialize has_logger to a boolean value instead of a function object?

Answer 1

If Firebug is not enabled, Firefox will throw an error if you don’t check.

var has_logger = !!(window.console && window.console.log);

will always be Boolean.