Question: ```
echo'<script>
$( ".callback" ).click(function() {
  waitingDialog.show("Loading Something...",{
                progressType: "success",
                onHide: function () {alert("<a href="">link</a>");}
      });
setTimeout(function () {
  waitingDialog.hide();
}, 3000);
});
</script>
';

```

I want insert some link in 

```
alert("<a href="">link</a>"); 

```

My `echo` is single quoted. So how I use it? When I tried with `.$pp.` variable I got an error saying

> 
> Unexpected EOF
> 
> 
>

Answer: 
I finally figured out the issue.

As shown in my `package.json`, I'm using `redux-devtools`. I had Redux DevTools installed on Chrome, but not Firefox. The site works fine after installing it on Firefox.
For me the issue was that I checked for the "clientInformation" property on the window object somewhere in my code and that doesn't exist in Firefox but it does in Chrome. 

A simple optional chain (window.clientInformation?.userAgent.....) fixed it up quickly.