式がtrueと評価された場合に実行する1つ以上のステートメントを指定します。
If Expression
{
Statements
}
If文の式がtrueと評価された場合(空文字列や数値0以外の結果)、その下の行やブロックが実行されます。それ以外の場合、対応するElse文があれば、実行はその下の行またはブロックにジャンプします。
複数の行を所有する場合は、それらの行を中括弧で囲む必要があります(ブロックを作成するため)。ただし、1つのIfに1行しか属さない場合は、中括弧は省略可能です。本ページ下部の例をご覧ください。
if(expression)のように、式が開括弧で始まる場合、ifの後のスペースは任意です。
OTB(One True Brace)スタイルはオプションで使用することができます。事例:
if (x < y) {
; ...
}
if WinExist("Untitled - Notepad") {
WinActivate
}
if IsDone {
; ...
} else {
; ...
}
If文とは異なり、Else文はその右側にあるどのタイプの文もサポートします。
式、三項演算子(a?b:c)、ブロック、Else、Whileループ
A_TickCount - StartTimeの結果が2*MaxTime + 100の結果より大きい場合、"Too much time has passed."と表示し、スクリプトを終了します。
if (A_TickCount - StartTime > 2*MaxTime + 100)
{
MsgBox "Too much time has passed."
ExitApp
}
if (Color = "Blue" or Color = "White")
{
MsgBox "The color is one of the allowed values."
ExitApp
}
else if (Color = "Silver")
{
MsgBox "Silver is not an allowed color."
return
}
else
{
MsgBox "This color is not recognized."
ExitApp
}
1つの複数文の行は、中括弧で囲む必要はありません。
MyVar := 3
if (MyVar > 2)
MyVar++, MyVar := MyVar - 4, MyVar .= " test"
MsgBox MyVar ; "0 test"と表示されます。
Similar to AutoHotkey v1's If Var [not] between Lower and Upper, the following examples check whether a variable's contents are numerically or alphabetically between two values (inclusive).
Checks whether var is in the range 1 to 5:
if (var >= 1 and var <= 5)
MsgBox var " is in the range 1 to 5, inclusive."
Checks whether var is in the range 0.0 to 1.0:
if not (var >= 0.0 and var <= 1.0)
MsgBox var " is not in the range 0.0 to 1.0, inclusive."
Checks whether var is between VarLow and VarHigh (inclusive):
if (var >= VarLow and var <= VarHigh)
MsgBox var " is between " VarLow " and " VarHigh "."
Checks whether var is alphabetically between the words blue and red (inclusive):
if (StrCompare(var, "blue") >= 0) and (StrCompare(var, "red") <= 0)
MsgBox var " is alphabetically between the words blue and red."
Allows the user to enter a number and checks whether it is in the range 1 to 10:
LowerLimit := 1
UpperLimit := 10
IB := InputBox("Enter a number between " LowerLimit " and " UpperLimit)
if not (IB.Value >= LowerLimit and IB.Value <= UpperLimit)
MsgBox "Your input is not within the valid range."
Similar to AutoHotkey v1's If Var [not] in/contains MatchList, the following examples check whether a variable's contents match one of the items in a list.
Checks whether var is the file extension exe, bat or com:
if (var ~= "i)\A(exe|bat|com)\z")
MsgBox "The file extension is an executable type."
Checks whether var is the prime number 1, 2, 3, 5, 7 or 11:
if (var ~= "\A(1|2|3|5|7|11)\z")
MsgBox var " is a small prime number."
Checks whether var contains the digit 1 or 3:
if (var ~= "1|3")
MsgBox "Var contains the digit 1 or 3 (Var could be 1, 3, 10, 21, 23, etc.)"
Checks whether var is one of the items in MyItemList:
; Uncomment the following line if MyItemList contains RegEx chars except |
; MyItemList := RegExReplace(MyItemList, "[\Q\.*?+[{()^$\E]", "\$0")
if (var ~= "i)\A(" MyItemList ")\z")
MsgBox var " is in the list."
Allows the user to enter a string and checks whether it is the word yes or no:
IB := InputBox("Enter YES or NO")
if not (IB.Value ~= "i)\A(yes|no)\z")
MsgBox "Your input is not valid."
Checks whether active_title contains "Address List.txt" or "Customer List.txt" and checks whether it contains "metapad" or "Notepad":
active_title := WinGetTitle("A")
if (active_title ~= "i)Address List\.txt|Customer List\.txt")
MsgBox "One of the desired windows is active."
if not (active_title ~= "i)metapad|Notepad")
MsgBox "But the file is not open in either Metapad or Notepad."