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如何去验证用户名和密码是由数字和字母构成的

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Release： 2016-06-13 10:26:12
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怎么去验证用户名和密码是由数字和字母构成的？
怎么去验证用户名和密码是由数字和字母构成的？ 如果需要正则麻烦帮忙写下吧

------解决方案--------------------
/^[a-z0-9]+$/i
i忽略大小写,如果需要的下还要忽略换行

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