Problem with CSS3 Target Selector

As I delve into the world of JS/HTML5/CSS3, I have been immersing myself in code examples from three different authors and combining and modifying them to enhance my learning. You can find my work-in-progress Pen, with references to the original authors, right here:

http://codepen.io/Widgeteria/pen/jqpyYb

My current challenge revolves around making the time element invisible within the narrow blue vertical Task Clock section (activated by clicking on the start button) when switching to either the Dropzone or Notes sections.

I have experimented with various approaches, including embedding CSS rules, but I have not been successful in making the faint clock numerals disappear from the vertical section box after transitioning to another section.

Here is the structure of the clock as it stands:

<h1><time>00:00:00</time></h1>
<button id="start">start</button>
<button id="stop">stop</button>
<button id="clear">clear</button>

My goal is to hide the <time> tag when the focus shifts to a section other than Task Clock and then make it visible again upon returning.

Another issue I am grappling with is adjusting the JavaScript so that the clock does not continue running if the Start button is clicked twice.

If you have any insights on how to tackle either of these challenges, I would greatly appreciate your input!

Answer №1

When it comes to the CSS section, make sure to make the following changes:

:target time {
  visibility: hidden;
}

and also adjust this part:

,time {
  visibility: visible;
}

to this:

:target #time {
  visibility: hidden;
}

and update this part as well:

#time {
  visibility: visible;
}

Furthermore, remember to include an id="time" attribute on the <h1> tag that contains the <time> tag.
The issue stemmed from the use of :target, which only applies to ids and not to tags themselves.

As for the Javascript section, consider modifying the timer function like so:

function timer() {
 if(t)
   clearTimeout(t);
 t = setTimeout(add, 1000);
}

This adjustment helps in clearing any existing timeouts to avoid losing references to ongoing processes and prevent multiple timeouts from running simultaneously.

Wishing you a productive day ahead.

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