var reg1=/^[a-zA-Z0-9]{3,10}$/;
var reg2=/^[\w\W]{6,20}$/
var str1=document.getElementById("username").value;
var str2=document.getElementById("password").value;
var str3=document.getElementById("password-2").value;
return reg1.test(str1)&®2.test(str2)&&(str3==str2);
夏祭iiii
var reg1=/^[a-zA-Z0-9]{3,10}$/; var reg2=/^[\w\W]{6,20}$/ var str1=document.getElementById("username").value; var str2=document.getElementById("password").value; var str3=document.getElementById("password-2").value; return reg1.test(str1)&®2.test(str2)&&(str3==str2);