P8Ktquug

1<script>
2function contains(str, substrings) {
3    for (var i = 0; i != substrings.length; i++) {
4       var substring = substrings[i];
5       if (str.indexOf(substring) != - 1) {
6         return substring;
7       }
8    }
9    return null; 
10}
11
12
13function validate(){
14	var emails = ["@outlook.com", "@gmail.com", "@yahoo.com.br"];
15    var x = document.getElementById("email_1").value;
16	if (!contains(x, emails)){
17        alert("Para evitar spams ou contas irregulares, nós permitimos apenas os seguintes provedor de email:\nMeuPau\nSeuPau\nNosso pau");       
18        return false;
19    }
20}
21</script>