JavaScript regular expression fuzzy matching IP address function example

高洛峰
Release: 2017-01-09 15:21:10
Original
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本文实例讲述了javascript正则表达式模糊匹配IP地址功能。分享给大家供大家参考,具体如下:

function checkip() { var strIP = document.getElementById("accessip").value; var re = /^(\d{1,3}|\*)\.(\d{1,3}|\*)\.(\d{1,3}|\*)\.(\d{1,3}|\*)$/g //模糊匹配IP地址的正则表达式 if(re.test(strIP)){ if(RegExp.$1 == '*' && RegExp.$2 == '*' && RegExp.$3 == '*' && RegExp.$4 == '*'){ return true; } if(RegExp.$1 < 256 && RegExp.$2 == '*' && RegExp.$3 == '*' && RegExp.$4 == '*'){ return true; } if(RegExp.$1 < 256 && RegExp.$2 < 256 && RegExp.$3 == '*' && RegExp.$4 == '*'){ return true; } if(RegExp.$1 < 256 && RegExp.$2 < 256 && RegExp.$3 < 256 && RegExp.$4 == '*'){ return true; } if(RegExp.$1 < 256 && RegExp.$2 < 256 && RegExp.$3 < 256 && RegExp.$4 < 256){ return true; } } return false; }
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希望本文所述对大家JavaScript程序设计有所帮助。

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