You cannot select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.

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function isPostalCode(c) {
var val = c.value;
if (val == '')
return;
if (val.length != 6) {
c.select();
c.focus();
alert('非法的邮政编码格式.');
return false;
}
var patrn = /^[0-9]+$/;
if (!patrn.exec(val)) {
c.select();
c.focus();
alert('非法的邮政编码格式.');
return false;
}
return true
}