我可以限制用户在应用程序描述的对话框中不输入特殊字符吗

Question

我有一个要求，即我必须限制用户在对话框中输入他需要输入的特殊字符。我只允许使用数字和字符。有人能告诉我这是否可能吗？？

代码如下：

display dialog "Enter You Name: " default answer "Name" buttons{"Proceed"}

在默认答案位置，用户不应输入任何特殊字符。。我可以这样做来限制他吗？？

Answer 1

您可以尝试以下操作：

set allowedLetters to characters of (do shell script "printf "%c" {a..z}")
set allowedNumbers to characters of (do shell script "printf "%c" {0..9}")
set allowedAll to allowedLetters & allowedNumbers & space
repeat
    set response to text returned of (display dialog "Enter You Name: " default answer "Name" buttons {"Proceed"} default button 1)
    try
        repeat with aCharacter in response
            if (aCharacter as text) is not in allowedAll then
                display dialog "Please enter letters and numbers only" buttons {"OK"} cancel button 1 default button 1
            end if
        end repeat
        exit repeat
    end try
end repeat
return response