Javascript Regexp 简明教程

JavaScript RegExp - \s

Description

\s 匹配一个空白字符（空格、制表符、换行符）（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 = "ab c";
         var pattern = /\s/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 :
Test 2 - returned value : null