Console
The console provides a simple debugging console that is similar to the JavaScript console mechanism provided by web browsers.
console.log
Writes a message to the console.
console.log('Hello, world!');
console.error
Writes an error message to the console.
console.error('An error occurred!');
console.warn
Writes a warning message to the console.
console.warn('A warning occurred!');
console.info
Writes an informational message to the console.
console.info('An informational message!');
console.clear
Clears the console.
console.clear();