<scritp language="javascript"> var reg = /^[0-2]?[0-3]:[0-5]?[0-9]:[0-5]?[0-9]$/; alert(reg.test("3:9:15")) </script>
/^[0-2][0-3]:[0-5][0-9]:[0-5][0-9]$/匹配 "xx:xx:xx"
var r = /\b(([0,1]?\d)|(2[0-3])):[0-5]?\d:[0-5]?\d\b/ alert(r.test("23:59:59")) alert(r.test("0:0:0")) alert(r.test("00:00:00")) alert(r.test("24:00:00")) alert(r.test("00:60:00")) alert(r.test("00:00:61"))
var reg = /^[0-2]?[0-3]:[0-5]?[0-9]:[0-5]?[0-9]$/;
alert(reg.test("3:9:15"))
</script>
alert(r.test("23:59:59"))
alert(r.test("0:0:0"))
alert(r.test("00:00:00"))
alert(r.test("24:00:00"))
alert(r.test("00:60:00"))
alert(r.test("00:00:61"))
你试下:alert(reg.test("4:9:15"));