Console
console.log(val) // prints value
console.dir(obj) // displays an interactive list of the properties
console.assert(false, 'msg') // writes an error message to the console if the assertion is false
console.clear() // clears the console if the environment allows
console.count('msg') // logs the number of this count() calls has been called
console.countReset('msg') // resets counter used with console.count()
console.error('msg') // outputs an error message
console.info('msg') // outputs an informational message
console.warn('msg') // outputs a warning message
console.table(objOrArr) // displays tabular data as a table
console.trace(objOrMsg) // outputs a stack trace
console.time(timerName) // starts a timer
console.timeLog(timerName) // logs the current value of a timer
console.timeEnd(timerEnd) // stops a timer
Deeply nested object In node you may not log very nested object Tt will not show you deeply nested props a: { b: { c: [Object] } } console.dir(obj, { depth: null }) prints the full object structure with unlimited nesting.
console.dir({
a: {
b: {
c: {
d: {
e: {},
},
},
},
},
}, { depth: null })