What is the use of console.log?
Please explain how to use it in JavaScript, with a code example.
There is nothing to do with jQuery and if you want to use it I advice you to do
if (window.console) {
console.log("your message")
}
So you don't break your code when it is not available.
As suggested in the comment, you can also execute that in one place and then use console.log as normal
if (!window.console) { window.console = { log: function(){} }; }