I can't use innerHTML

Question

I tried adding innerHTML to my Java script but it said that the property can't be read.
Here's my code..

https://code.sololearn.com/W7ZoQ7XXDh1p/?ref=app

Answer 1

That is because your script loaded before the document did. Wrap it in an onload function.

window.onload = function() {
var y = document.getElementById("demo");
y.innerHTML = "another demo text";
}

Answer 2

You should check this, explain a little more why that happens:

https://www.sololearn.com/post/7444/?ref=app

Answer 3

Hatsy Rei Okay I added it to the script but the text did'nt change...

Answer 4

Asteck 1263 You have a typo there. It's window.onload not window.unload

so change u to o, then it will work

Answer 5

but how can you set intervals for the change... like wait 5 seconds before changing?