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51CTO
15 年
JSP验证码学习笔记-jsp验证码 - 51CTO
本文通过实例,介绍在做JSP验证码的时候为了给用户很好的体验,需要在原有验证方式基础之上增加一段js,通过xmlhttp来获取返回值,以此来验证是否有效。同时,本例还特别适合检验用户名是否有效。
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