以下代码,哪个结果是正确的?()var a=' 123.5abc',b='100abc';alert(parseInt(a)+Number(b));
A.123100abc
B. 123.5abc100abc
C.NaN
D. 223
A.123100abc
B. 123.5abc100abc
C.NaN
D. 223
A.123abc123
B. 123abc
C.123
D. abc
A. 1,2,3
B. 1,2,3,4
C. 2,3,4
D. 2,3,4,5
A.100
B. 100.56
C.NaN
D.80
A.100
B. 100.1
C.NaN
D.undefined
A.-43 43
B.-43 42
C.-42 42
D.-42 43
A. getDate(0);
B.2006
C.4
D.1
E.6
A.1 2 3
B.3 2 4
C.0 1 2
D.1 2 4
请看代码,回答下面的问题。
Type
TMammal=Class
Procedure Walk;
…..
end;{end of TManmml}
procedure TMammal.Walk;
begin
ShowMessage(‘Result is Mammal Walk’);
end;
TDog=Class(TMammal)
Procedure Walk;
end;
procedure TDog.Walk;
begin
ShowMessage(‘Result is Dog Walk’);
end;
var
Mammal:TMammal;
dog:TDog;
begin
Mammal:=TDog.Create;
Mammal.Walk;
Mammal.Free;
end;
上面代码中,最后的输出结果是:()
A.‘Result is Dog Walk’
B.‘Result ia Mannal Walk’
A.function show(text){ alert(text); }
B.var show = function show(text){ alert(text); }
C.var show = function(text){ alert(text); }
D.var show =new function("text" , "alert(text)");