function verify(username){
return /^[a-z]\w{5,15}$/i.test(username);
}
console.log( verify("myjinxin2015"))
console.log( verify("smile67"))
console.log( verify("GiacomoSorbi"))
console.log( verify("jhoffner"))
console.log( verify("g964") )
console.log( verify("matt c") )
console.log( verify("My_name_is_ZozoFouchtra") ) Ответ:
true
true
true
true
false
false
false
JavaScript test | #JavaScript