1.search()方法，返回首次出现位置，如果找不到匹配则返回-1
InBlock.gif<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
InBlock.gif<html>
InBlock.gif    <head>
InBlock.gif    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
InBlock.gif    <title>正则表达式</title>
InBlock.gif    <script text="text/javascript">
InBlock.gif        alert("hello <zhangsan>.".search(/<\S+>/));
InBlock.gif    </script>
InBlock.gif    </head>
InBlock.gif    <body>
InBlock.gif
InBlock.gif    </body>
InBlock.gif</html>
2.replace()方法
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
    <head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <title>正则表达式</title>
    <script text="text/javascript">
        alert("hello <zhangsan>.".replace(/<\S+>/,"<张三>"));
    </script>
    </head>
    <body>

    </body>
</html>
替换匹配规则的字串
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
    <head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <title>正则表达式-去除尖括号</title>
    <script text="text/javascript">
        alert("hello <zhangsan>.".replace(/<(\S+)>/,"$1"));
    </script>
    </head>
    <body>

    </body>
</html>
3.match()
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
    <head>
    <meta http-equiv="content-type" content="text/html; charset=UTF-8">
    <title>正则表达式-分割邮箱</title>
    <script text="text/javascript">
      var arr="[email]xcf-007@163.com[/email]".match(/(\S+)@((\w+\.)+\w+)/);
     document.write(arr);//xcf-007@163.com,xcf-007,163.com,163.    
    </script>
    </head>
    <body>

    </body>
</html>