import {history} from 'marko-path-router'

class {
    login() {
        let value = this.getEl("name").value
        if(value.length > 0) {
            document.cookie = "swindon_presence_login=" + value
            history.push('/list')
        }
    }
}
<input key="name" type="text" placeholder="My Name">
<button on-click('login')>
    Join
</button>