xawerion/easyXDM — comment on commit 20fc0238c919b8069f8fc8b803c86779dd6cfa95
File: src/Core.js line 587
By oyvindkinsey:

Actually, the proper way to do this is

if (config.usePost) {
var form = config.container.appendChild(document.createElement('form'));
form.target = frame.name;
form.action = src;
form.method = 'POST';
form.submit();
form.parentNode.removeChild(form);
} else {
frame.src = src;
}

You don't need any more.