xmpp.chapril.org-conversejs/src/templates/form_input.html

<div class="form-group">
    <label for="{{{o.id}}}">{{{o.label}}}</label>
    <input class="form-control" name="{{{o.name}}}" type="{{{o.type}}}" id="{{{o.id}}}"
        {[ if (o.placeholder) { ]} placeholder="{{{o.placeholder}}}" {[ } ]}
        {[ if (o.value) { ]} value="{{{o.value}}}" {[ } ]}
        {[ if (o.required) { ]} required {[ } ]} >
</div>