JS Debugging Tools Console.log () method to view the implementation of JS code _javascript Tips

I was in the debugging code, with the execution of JS code, generally by using alert in the code block to view the implementation of the JS code, today is also to see friends using the Console.log function to print output functions, variables, objects, The following is used to record the use of Console.log, the specific syntax is:

Console.log ("value is:", FN);

Console.log () Can output variables, functions, arrays, objects, etc.