四时宝库

 var regex = /^\d*(\.[1-9]|\.\d[1-9])*$/
 console.log(1.2,regex.test(1.2));
 console.log(0.3,regex.test(0.3));
 console.log(1.03,regex.test(1.03));
 console.log(9.0,regex.test(9.0));
 console.log(88,regex.test(88));
 console.log(.1,regex.test(.1));
 console.log(1.0,regex.test(1.0));
 console.log("88",regex.test("88"));
 console.log("88a",regex.test("88a"));
 console.log("8 8",regex.test("8 8"));
 console.log("1.",regex.test("1."));
 console.log(".1",regex.test(".1"));
 console.log("1.0",regex.test("1.0"));
 console.log("1.03",regex.test("1.03"));
 console.log("1.00",regex.test("1.00"));
1.2 true
0.3 true
1.03 true
9 true
88 true
0.1 true
1 true
88 true
88a false
8 8 false
1. false
.1 true
1.0 false
1.03 true
1.00 false