What's the use of Console Api?
This article mainly introduces the use of Console Api, has a certain reference value, interested friends can refer to, I hope you can learn a lot after reading this article, the following let the editor take you to understand it.
All Console Api
Console.dir (console)
Display simple information
Console.log ('hello world')
Console.info ('Information')
Console.error ('error')
Console.warn ('warning')
Placeholder
Console.log ('% dmurt% dmurt% dmae1% scurijimi 2016, 08pr 21 'Chinese women's volleyball team won the championship!')
Count the number of code execution
Function getInfo ()
{
Console.count ('number of execution:')
}
GetInfo ()
GetInfo ()
GetInfo ()
GetInfo ()
Display grouping information
Console.group ("first set of messages")
Console.log ('Group 1: custom message 1')
Console.log ('Group 1: custom message 2')
Console.log ('Group 1: custom message 3')
Console.groupEnd ()
Console.group ("second set of information")
Console.log ('Group 2: custom message 1')
Console.log ('Group 2: custom message 2')
Console.log ('Group 2: custom message 3')
Console.groupEnd ()
Display object information
Var TomObj = {
Name: "Tom"
Sex: "male"
Age: '31'
Hobby: "coding..."
}
Console.dir (TomObj)
Display page information
Console api
Var info = document.getElementById ('console')
Console.dirxml (info)
Determine whether an expression or variable is true
Var code = 200
Console.assert (code)
Console.assert (code = 200)
Console.assert (code = = 500)
Trace the call trajectory of a function
Function add (a _ r _ b) {
Console.trace ()
Return a + b
}
Add (1 dint 2)
Add (2pr 3)
Add (3pr 4)
Timing function
Console.time (console timer)
Console.log ('Start')
For (var iTuno Bandi)
