Question

For some strange reason I get a weird error.

I have an element (which I’d defined with PHP) that eventuly looks like this:

    <span id="l_area_1_5" style="display: inline; ">

    ...some html inputs and stuff....

    </span>

Which I am certain by Inspect Element of the Chrome.

Now when I try to address to it programaticly with this:

document.getElementById("1_area_1_5").style.display = 'none';

I get the Cannot read property 'style' of null error.

I have no idea what the hell that’s supposed to mean, any help?

Answer 1

The error means that the element doesn’t exist. It’s because you have a typo. You wrote 1 instead of l.

l_area_1_5
1_area_1_5
^