手掌心
提供一个新思路function compare(a,b) { var as = a.split('.') var bs = b.split('.') return new Date(as[0],as[1],as[2]) > new Date(bs[0],bs[1],bs[2])}compare('3.0.11','3.0.9')//truecompare('3.0.11','3.0.20')//falsecompare('4.0.11','3.0.20')//true