Nest a Div inside another Div with a precise margin of 10 pixels

Question

Nest a Div inside another Div with a precise margin of 10 pixels

Recently, I attempted to create a fullscreen webpage like this one: https://i.sstatic.net/21KCr.png My goal was to have the color of each element change randomly every second.

Here is the JavaScript code I implemented:

<script>
        var tid = setInterval(chngColor, 1000);

        function chngColor() 
        {
            document.body.style.backgroundColor = '#'+(Math.random()*0xFFFFFF<<0).toString(16);
        }
    </script>

However, I encountered an issue when trying to create a fullscreen div that would encompass the entire body, with additional inner divs spaced by a margin of 10px. I cannot seem to get the styling for these divs right.

        position: absolute;
        width: 100%;
        height: 100%;
        left: 0;
        top: 0;
        background-color="myFunction();";
        z-index: 10;
        margin-bottom:10px;
        margin-top:10px;
        margin-left:10px;
        margin-right:10px;

Unfortunately, my current setup isn't working as expected. Any advice or suggestions?

javascript html css

Answer 1

Answer №1

To incorporate dynamic color changes in CSS, it's important to note that JavaScript functions cannot be directly used within CSS code. Instead, the recommended approach is to implement the chngColor function on each specific element requiring a background alteration.

An adjustment must be made to your function so that it accepts a dom element as an argument.

function chngColor(el) 
{
    el.style.backgroundColor = '#' + (Math.random()*0xFFFFFF<<0).toString(16);
}

If your elements share a common class, such as "foo", you can iterate through all instances and apply the function to each one:

var foos = document.getElementsByClassName('foo');

for(var i=0; i <foos.length;i++){
  chngColor(foos[i]);
}

Encapsulate this logic within a function for use with setInterval, allowing for periodic color updates.

Answer 2

To incorporate dynamic color changes in CSS, it's important to note that JavaScript functions cannot be directly used within CSS code. Instead, the recommended approach is to implement the chngColor function on each specific element requiring a background alteration.

An adjustment must be made to your function so that it accepts a dom element as an argument.

function chngColor(el) 
{
    el.style.backgroundColor = '#' + (Math.random()*0xFFFFFF<<0).toString(16);
}

If your elements share a common class, such as "foo", you can iterate through all instances and apply the function to each one:

var foos = document.getElementsByClassName('foo');

for(var i=0; i <foos.length;i++){
  chngColor(foos[i]);
}

Encapsulate this logic within a function for use with setInterval, allowing for periodic color updates.

Nest a Div inside another Div with a precise margin of 10 pixels

Answer №1

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