e must not start with an underscore. See an <a href="/3.7/examples/js_api.html">example</a>.</li> <li>by passing your function(s) to window object's <code>expose(func)</code>. This will expose a function or functions to the JS domain as <code>pywebview.api.func_name</code>. Unlike JS API, <code>expose</code> allows to expose functions also at the runtime. If there is a name clash between JS API and functions exposed this way, the latter takes precedence. See an <a href="/3.7/examples/expose.html">example</a