jQuery密码强度检测代码基于jquery.1.7.2.min.js插件制作，密码小于六位的时候，密码强度图片都为灰色；密码为八位及以上并且字母数字特殊字符三项都包括,强度最强；密码为七位及以上并且字母、数字、特殊字符三项中有两项，强度是中等；如果密码为6为及以下，就算字母、数字、特殊字符三项都包括，强度也是弱的。-jQuery password strength detection code based jquery.1.7.2.min.js plug-in to the password less than six, when the strength of the password image are gray　the password is eight or more alphanumeric and special characters, three are included, the strength of the most strong　and the password is seven or more letters, numbers, special characters two of the three, the intensity is moderate　and if the password is 6 or less, and even letters, numbers, special characters, three are included, the strength is weak .