<script language=JavaScript>
var reg=/T\d{4} /
alert(reg.test("T1234 "))
alert(reg.test("T1234 "))
alert(reg.test("T123 g"))
</script>
var reg=/T\d{4} /
alert(reg.test("T1234 "))
alert(reg.test("T1234 "))
alert(reg.test("T123 g"))
</script>
调试欢乐多
修改如下:
<script language=JavaScript>
var reg=/^T\d{4} $/
alert(reg.test("T1234 "))
alert(reg.test("T1234 "))
alert(reg.test("T123 g"))
alert(reg.test("abcT1234 "))
</script>
var str; //str是要检测的字符串
return reg.test(str);