I have a following piece of code ...

$('head').append(`<script>
  const appName = 'PLACEHOLDER';
...
<script>`);

I want to archive something like this ...

const APP_NAME = 'PLACEHOLDER';

$('head').append(`<script>
  const appName = ${APP_NAME};
...
<script>`);

In result the complied result is like

const APP_NAME = 'PLACEHOLDER';

$('head').append(`<script>
  const appName =;
...
<script>`);

Any help is really appreciated :)

const APP_NAME = 'PLACEHOLDER';

$('head').append(`<script>
  const appName = '${APP_NAME}';
...
<script>`);