I want to make a CNP validator ( https://en.wikipedia.org/wiki/Romanian_identity_card) in javascript through a form that has a button and a text input, but I don't know how to make the html part, i only managed the java code. function validCNP( p_cnp ) { var i=0 , year=0 , hashResult=0 , cnp=[] , hashTable=[2,7,9,1,4,6,3,5,8,2,7,9]; if( p_cnp.length !== 13 ) { return false; } for( i=0 ; i<13 ; i++ ) { cnp = parseInt( p_cnp.charAt(i) , 10 ); if( isNaN( cnp[I] ) ) { return false; } if( i < 12 ) { hashResult = hashResult + ( cnp[I] * hashTable[I] ); }[/I][/I][/I] } hashResult = hashResult % 11; if( hashResult === 10 ) { hashResult = 1; } year = (cnp[1]*10)+cnp[2]; switch( cnp[0] ) { case 1 : case 2 : { year += 1900; } break; case 3 : case 4 : { year += 1800; } break; case 5 : case 6 : { year += 2000; } break; case 7 : case 8 : case 9 : { year += 2000; if( year > ( parseInt( new Date().getYear() , 10 ) - 14 ) ) { year -= 100; } } break; default : { return false; } } if( year < 1800 || year > 2099 ) { return false; } return ( cnp[12] === hashResult ); console.log(validCNP(numar)); } Code (JavaScript): If anyone can help me with the html form, i would appreciate it
Hi Opfabi, welcome to the forum... Are you looking for following HTML structure: <!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <title>test page</title> </head> <body> <h1>test page</h1> <form id="form-cnptest"> <fieldset> <label>numar = <input type="text" name="numar"></label> <button type="submit">test CNP</button> </fieldset> </form> <script src="script.js"></script> </body> </html> HTML: