在javascript中，如果我有3个这样的变量：
var x = 1
var y = 'cat'
var z = {color: 'blue'}
我可以像这样记录所有这些：
console.log('The values are:', x, y, z)
在飞镖中，您可以import 'dart:html'，它会在已编译的JavaScript中将print映射到console.log。但print只接受一个参数 - 而不是3.当编译的js在浏览器中运行时，此dart将失败：
print('The values are:', x, y, z)
我唯一能想到的就是将这些参数字符串化并将它们连接成一个字符串，并打印出来。但是后来我失去了Chrome扩展打印到控制台的对象的能力。
是否可以使用一个print语句（或类似语句）打印多个对象？如果是这样，怎么样？
答案 0 :(得分：4)
怎么样：？
print('The values are: ${[x, y, z]}')
或
print('The values are: $x, $y, $z')
或
['The values are:', x, y, z].forEach(print);
答案 1 :(得分：1)
在Dart中，您可以导入dart:html，以便访问<HTML>
<HEAD>
<TITLE></TITLE>
<HTA:APPLICATION
APPLICATIONNAME="Access to the system © Hackoo © 2015"
BORDER="THIN"
BORDERSTYLE="NORMAL"
ICON="Explorer.exe"
INNERBORDER="NO"
MAXIMIZEBUTTON="NO"
MINIMIZEBUTTON="NO"
SCROLL="NO"
SELECTION="NO"
SINGLEINSTANCE="YES"/>
</HEAD>
<META HTTP-EQUIV="MSThemeCompatible" CONTENT="YES">
<BODY TOPMARGIN="1" LEFTMARGIN="1"><CENTER><DIV><SPAN ID="ONSCR"></SPAN></DIV></CENTER></BODY>
<SCRIPT LANGUAGE="VBScript">
Option Explicit
Dim Title,ws,Voice,ErrorMsg,WelcomeMsg,MyGoodPassword,Password,Temp,Tests,ProcessEnv,UserName
Title = "Access to the system © Hackoo 2015"
Dim objFSO : Set objFSO = CreateObject("Scripting.FileSystemObject")
Set ws = CreateObject("wscript.Shell")
Set ProcessEnv = Ws.Environment("Process")
UserName = ProcessEnv("USERNAME")
Temp = WS.ExpandEnvironmentStrings("%Temp%")
Tests = Temp &"\Tests.txt"
'------------------------------------------------------------------------------------
Sub window_onload()
CenterWindow 280,180
Call PasswordForm()
Call TextFocus
Dim Count : Count = 0
If Not objFSO.FileExists(Tests) Then
Dim Logfile : Set Logfile = objFSO.OpenTextFile(Tests,2,True)
Logfile.writeline Count
Logfile.Close
end If
Call Kill("Explorer.exe")
Call DisableTaskMgr()
End Sub
'------------------------------------------------------------------------------------
Sub CenterWindow(x,y)
Dim iLeft,itop
window.resizeTo x,y
iLeft = window.screen.availWidth/2 - x/2
itop = window.screen.availHeight/2 - y/2
window.moveTo ileft,itop
End Sub
'------------------------------------------------------------------------------------
Sub PasswordForm()
Self.document.title = "Access to the system © Hackoo 2015"
Self.document.bgColor = "DarkOrange"
ONSCR.InnerHTML="<center><FONT COLOR=""#FFFFFF"" SIZE=""+1"" FACE=""VERDANA,ARIAL,HELVETICA,SANS-SERIF"">Type your Password</FONT><br><br><input type=""password"" name=""PasswordArea"" size=""20"" onKeyUp=""TextFocus""><P>"_
&"<input type=""Submit"" STYLE=""HEIGHT:25;WIDTH:190"" value=""Access to the system"" name=""run_button"" onClick=""CheckPassword"">"
END Sub
'------------------------------------------------------------------------------------
Sub CheckPassword
Dim NB_Tests_MAX : NB_Tests_MAX = 3
Dim Readfile,Count,NB_Tests_Remaining,Logfile,Controle,Command,Executer,MsgNumbTests,MsgReboot
Set Voice = CreateObject("SAPI.SpVoice")
ErrorMsg = "ATTENTION ! ! ! "& vbcr &"The Password is Wrong ! "& vbcr &"Try Again !"
WelcomeMsg = "Welcome again "& DblQuote(UserName) &" in your System !"
MyGoodPassword = "9999"
Set Readfile = objFSO.OpenTextFile(Tests,1)
Count = Readfile.ReadAll
Readfile.Close
Controle = True
While Controle
Count = Count + 1
NB_Tests_Remaining = NB_Tests_MAX - Count
Set Logfile = objFSO.OpenTextFile(Tests,2,True)
Logfile.writeline Count
Logfile.Close
If PasswordArea.Value <> MyGoodPassword Then
Voice.Speak ErrorMsg
ws.Popup ErrorMsg,"1",Title,0+16
MsgNumbTests = "ATTENTION !!! "&vbcr&"Bad Password and NB°of TESTS is " & Count &"."&vbCr&_
"The remaining number of tests is "& NB_Tests_Remaining
Voice.Speak MsgNumbTests
MsgBox MsgNumbTests,48,Title
Sleep(1)
Location.Reload(True)
end if
If PasswordArea.Value = MyGoodPassword Then
If objFSO.FileExists(Tests) Then objFSO.DeleteFile Tests,True
Controle = False
Voice.Speak WelcomeMsg
ws.Popup WelcomeMsg,"1",Title,0+64
Call Launch("Explorer.exe")
Call EnableTaskMgr()
Self.Close
Exit Sub
End If
If Count = NB_Tests_MAX Then
If objFSO.FileExists(Tests) Then objFSO.DeleteFile Tests,True
Voice.Speak "The computer will reboot in 30 seconds !"
MsgReboot = "The Limit number of tests is reached ! "&vbcr& "The computer will Reboot in 30 seconds !"
MsgBox MsgReboot,48,"The Limit number of tests is reached ! "
Command="cmd /c Shutdown.exe -r -t 30 -c " & chr(34) & "The computer will reboot in 30 seconds !" & chr(34)
Executer = WS.Run(Command,0,False)
window.close
End If
Exit Sub
wend
End Sub
'----------------------------------------------------------------------------------
Sub TextFocus
PasswordArea.Focus
End Sub
'----------------------------------------------------------------------------------
Sub Kill(Process)
Dim Ws,Command,Execution
Set Ws = CreateObject("Wscript.Shell")
Command = "cmd /c Taskkill /F /IM "&Process&""
Execution = Ws.Run(Command,0,False)
End Sub
'----------------------------------------------------------------------------------
Sub Launch(Process)
Dim Ws,Command,Execution
Set Ws = CreateObject("Wscript.Shell")
Command = "cmd /c Start "&Process&""
Execution = Ws.Run(Command,0,False)
End Sub
'-----------------------------------------------------------------------------------
'------------------------------EnableTaskMgr----------------------------------------
Sub EnableTaskMgr()
Dim WshShell,System
System="HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System\"
Set WshShell=CreateObject("WScript.Shell")
Wshshell.RegWrite System, "REG_SZ"
WshShell.RegWrite System &"\DisableTaskMgr", 0, "REG_DWORD"
End sub
'------------------------------------------------------------------------------------
'-----------------------------DisableTaskMgr-----------------------------------------
Sub DisableTaskMgr()
Dim WshShell,System
System="HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System\"
Set WshShell=CreateObject("WScript.Shell")
Wshshell.RegWrite System, "REG_SZ"
WshShell.RegWrite System &"\DisableTaskMgr", 1, "REG_DWORD"
End sub
'--------------------------------------------------------------------------------------
Sub Sleep(intNumSecs)
' Because WScript.Sleep () is not available in HTA
' scripts, invoke a VBScript file to do the waiting.
Dim strScriptFile, strCommand, intRetcode, objWS
If intNumSecs <= 0 Then Exit Sub
Set objWS = CreateObject ("WScript.Shell")
strScriptFile = "%temp%\wait" & intNumSecs & "seconds.vbs"
strCommand = "cmd /c ""echo WScript.Sleep " & intNumSecs * 1000 & " >" & strScriptFile & _
"&start /wait """" wscript.exe " & strScriptFile & """"
intRetCode = objWS.Run (strCommand, 0, True)
If intRetCode = 0 Then Exit Sub
End Sub
'---------------------------------------------------------------------------------------
Function DblQuote(Str)
DblQuote = Chr(34) & Str & Chr(34)
End Function
'---------------------------------------------------------------------------------------
</SCRIPT>
。不幸的是，它的log方法只能接受一个参数。您可以将对象包装在列表中：
window.console