缩短正则表达式

Question

我需要一个正则表达式，用于过滤字符串中没有任何点的数字。我怎样才能缩短我的表达？

myString.replace( /[^\d.]/g, '' ).replace(/\./g, '')

Answer 1

使用 public partial class MainWindow : Window { public MainWindow() { InitializeComponent(); List<User> users = new List<User>(); users.Add(new User() { Id = 1, Name = "John Doe", Birthday = new DateTime(1971, 7, 23) }); users.Add(new User() { Id = 2, Name = "Jane Doe", Birthday = new DateTime(1974, 1, 17) }); users.Add(new User() { Id = 3, Name = "Sammy Doe", Birthday = new DateTime(1991, 9, 2) }); users.Add(new User() { Id = 4, Name = "Sammy Doe1", Birthday = new DateTime(1991, 9, 2) }); users.Add(new User() { Id = 5, Name = "Sammy Doe2", Birthday = new DateTime(1991, 9, 2) }); users.Add(new User() { Id = 6, Name = "Sammy Doe3", Birthday = new DateTime(1991, 9, 2) }); lvDataBinding.ItemsSource = users; } } public class User { public int Id { get; set; } public string Name { get; set; } public DateTime Birthday { get; set; } public string Details { get { return String.Format("{0} was born on {1} and this is a long description of the person.", this.Name, this.Birthday.ToLongDateString()); } } } ，删除任何不是数字或字面点的字符。

使用.replace( /[^\d.]/g, '' )，删除所有点。

要合并，只需使用

.replace(/\./g, '')

myString = myString.replace( /\D/g, '' ) 将匹配所有不是数字的字符。