<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def codemirror_field_js_assets(*args):
 """ Tag to render CodeMirror Javascript assets needed for all given fields. Example: :: {% load djangocodemirror_tags %} {% codemirror_field_js_assets form.myfield1 form.myfield2 %} """

    manifesto = CodemirrorAssetTagRender()
    manifesto.register_from_fields(*args)

    return mark_safe(manifesto.js_html())