Libra 2 kepub - running Javascript

[LPolder]

Hi all,
I want to run the following script in my page, but it crashes because kobo sees the "<" sign as the start of a tag (i think)

<script type="text/javascript">
function updateTimeText() {
const now = new Date();
const hour = now.getHours();
let greeting;

if (hour < 12) {
greeting = "Good morning!";
} else if (hour < 18) {
greeting = "Good afternoon!";
} else {
greeting = "Good night!";
}
document.getElementById("weathertime").textContent = greeting + " it is now " + now.toLocaleTimeString();
}
</script>

It does not seem to replace the text on my page with the correct greeting and time, what am i doing wrong? Adding the //<![CDATA[ tags doesn't seem to change anything.

it does work on an ereader in my browser

[neclepsio]

"Kobo’s eInk and Desktop platforms have limited support for JavaScript, and do not support interactive JavaScript elements." (https://github.com/kobolabs/epub-spe...script-support)

I think what you are trying to do is simply not supported, especially if you call updateTimeText using an interactive element.

[LPolder]

I am not calling the function using an interactive element, but am calling it later in the script. I did the same with the following function, and that one works:

function rollDice(){return Math.floor(6*Math.random())+1};

I agree that the JS support is limited, but I'm just trying to figure out how limited exactly, and how to escape the "<" sign

[LPolder]

I have it working, right now it does use the
//<![CDATA[ tags and I splice the date instead of the getHours(). I also do not use toLocaleTimeString. Besides this I simplified some other stuff and took out some other function. It's almost like the epub has a timeout when stuff takes too long. But I'm happy this works and I hope this helps anyone:

function startup() {
var dt = new Date()
var t = dt.toTimeString().slice(0, 8);
var h = t.slice(0,2);
var greeting = "Hello!";
if (h < 12){
greeting = "Good Morning!";
} else if (h< 18) {
greeting = "Good afternoon!";
} else {
greeting = "Good evening";
}
document.getElementById("greeting").textContent = greeting;
}

document.addEventListener("DOMContentLoaded", startup);

this shows a different greeting based on the system time of the ereader