console

2021.12.22
console in JavaScript
#JavaScript#basics
use client /components/post/reExport ,
  date:  ,
  tags: [ ],
  imgUrl:  ,
  desc:  ,
  body: (
    <>
      <H>Console</H>

      <Code block jsx>{ ) // writes an error message to the console if the assertion is false
        console.clear() // clears the console if the environment allows
        console.count( ) // logs the number of this count() calls has been called
        console.countReset( ) // resets counter used with console.count()
        console.error( ) // outputs an error message
        console.info( ) // outputs an informational message 
        console.warn( ) // 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
       a: { b: { c: [Object] } } console.dir(obj, { depth: null }) 
        console.dir({
          a: {
            b: {
              c: {
                d: {
                  e: {},
                },
              },
            },
          },
        }, { depth: null })
      