Javascript Regexp 简明教程

JavaScript RegExp - \d

Description

\d 匹配一个数字 (0-9)（正则表达式）。

Example

以下示例显示了 RegExp 表达式的用法。

<html>
   <head>
      <title>JavaScript RegExp</title>
   </head>

   <body>
      <script type = "text/javascript">
         var str = "ab123c";
         var pattern = /\d/g;

         var result = str.match(pattern);
         document.write("Test 1 - returned value : " +  result);

         str = "abc";
         result = str.match(pattern);
         document.write("<br/>Test 2 - returned value : " +  result);
      </script>
   </body>
</html>

Output

Test 1 - returned value : 1,2,3
Test 2 - returned value : null