javascript验证瑞典出生号码

Question

im trying to do a simple validation for an input who shall allow a number formated like this: 112233-1111 and when i accomplish that i would make it so that 22 cant exceed 12 and 33 exceed 31, this is what i got so far

var pn=document.forms.kontakt.pnr.value;
var spos=pn.indexOf("-"); 
var as= /^[0-9]{10}$/; 
if (pn<11 || spos+4=pn.length || pn==null || pn=="")
{
alert ("Fyll i korrekt personnummer xxxxxx-xxxx");
kontakt.pnr.style.background = "red";
return false;   
}

but it aint working, have i missed something?

Answer 1

There are a few problems here that I'd like to point out. First, spos+4=pn.length should be spos+4==pn.length (double equals because you are comparing). x does not seem to be defined and should be removed. Your regex variable as is never used.

Really, what you want to do is:

 function calculate() { //this matches 6 numbers followed by a ("-" or "+") followed by 4 more numbers var as = /^[0-9]{6}[-+][0-9]{4}$/; var pn=document.forms.kontakt.pnr.value; if (as.test(pn)) { var year = pn.substr(0,2); var month = pn.substr(2,2); var day = pn.substr(4,2); //You probably need a better date checker, this is just an example if (month <= 12 && day <= 30) { document.body.innerHTML = 'great success!'; return; } } document.body.innerHTML = 'Too bad!'; }

 <form name="kontakt"> <input name="pnr" type="text" value="991222-1111"/> <button type="button" onclick="calculate()">Calculate</button> </form>