var uname = document.getElementById('username').value;
var pass = document.getElementById('password').value;
var pass2 = document.getElementById('password-2').value;
var pat = /^[0-9a-zA-Z]{3,10}$/;
var ppat = /^.{6,20}$/;
var unameR = pat.test(uname);
var passR = ppat.test(pass) && ppat.test(pass2);
var equalR = pass === pass2;
烛龙一现
var uname = document.getElementById('username').value; var pass = document.getElementById('password').value; var pass2 = document.getElementById('password-2').value;
var pat = /^[0-9a-zA-Z]{3,10}$/; var ppat = /^.{6,20}$/;
var unameR = pat.test(uname); var passR = ppat.test(pass) && ppat.test(pass2); var equalR = pass === pass2;
if(unameR && passR && equalR){ alert('success'); return true; } alert('failed!'); return false; }