如果您正在寻找有效性测试：

If you are looking for a test for validity:

// from string start to end, only contains '-' "whitespace" or 'a'-'z' 
someString.match(/^[-\sa-zA-Z]+$/) 

或否定：

// has some invalid character not '-' "whitespace" or 'a'-'z'
someString.match(/[^-\sa-zA-Z]/)