Q:

Changing Font Size in Cordova App by Userinput

So created this nice app. Some testers go test. Some are older folks, don't have good eye sight. Want bigger font. So we make Settings Page: fonts for everyone.
Good, not problem. Everything text in css font-size has em. But is cordova app. So HTML is loaded quite a number of times. There goes Javascript DOM stuff.
Still not problem. We have view-port.
Are there other ways to do this? Quite a number of HTML parts are deleted and others are put back in, so to add a class to an element does not work.

A:

This is how I solved it: It is not a changing of the font-size, it is an abibity for the user to zoom, or, actually: user-scalable=yes
Old:
<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=no">

Into:
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1.0, user-scalable=yes">

