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JavaScript JavaScript Foundations Variables Basics

B D
B D
2,703 Points

Can't use js to make div background black?

I can't seem to make js change the background color of a div.

Here's what's in my html file:

<script src="script.js"></script>
<div class="myDiv">


<p>F javascript.</p>


</div>

And here's what's in my script.js file:

document.getElementById('myDiv').style.background = "black";

Not sure what I'm doing wrong? Thx in advance.

Michael Escoto
Michael Escoto
30,028 Points

You need to use document.getElementById('myDiv').style.backgroundColor = "black";

B D
B D
2,703 Points

Thanks for the input. It turns out that both your code and my code for that line in particular work just fine. I had the div in my html labeled as a class, and I had the js script loading before the div instead of after (so the js script would know what 'myDiv' was). Thanks again for your help.

2 Answers

B D
B D
2,703 Points

I had the div in my html labeled as a class, and I had the js script loading before the div instead of after (so the js script would know what 'myDiv' was).

Where would we want to use code like this, given that CSS can do the same thing? Perhaps in response to a particular event or condition that can't be detected by CSS code? Thanks