jquery validator remote

1$( "#myform" ).validate({
2
3  rules: {
4
5    email: {
6
7      required: true,
8
9      email: true,
10
11      remote: {
12
13        url: "check-email.php",
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15        type: "post",
16
17        data: {
18
19          username: function() {
20
21            return $( "#username" ).val();
22
23          }
24
25        }
26
27      }
28
29    }
30
31  }
32
33});
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35