Ionic url redirecing

I’m creating personal testing Ionic application with QR Code Scanner and virtual tour generated in Panotour(for simlicity).

I have written code for scannig and decoding QRCode already, but I don’t know how to redirect app to www folder and back.

In www folder I have resources and my index.html with code

<div class="qr">
    <a href="../src/pages/qrcode/qrcode.html">
        <img src="qr.png" title="QR Code icon">

In src/pages/qrcode folder is my code for qrcode scanner with qrcode.html, qrcode.scss, qrcode.ts

How can I redirect from my www/index.html to src/pager/qrcode/qrcode.html?