Utilize JavaScript to dynamically modify the position of an HTML element

I am working on a script that can manipulate the size of a period symbol, making it increase and decrease in size while staying in one place.

However, I have encountered an issue where the element moves up or down the page when its size changes.

I tried adjusting the padding as the font size changes to prevent this movement, but it did not solve the problem.

Below is the Javascript code I have been using:

window.dotFluxOut = true;
var i = 1;
var pad = 50;

var dots = window.setInterval(function () {
    var wait = document.getElementById("wait");

    if (window.dotFluxOut) {
        wait.style.fontSize = i + "px";
        wait.style.padding = (pad - i) + "px";
        i++;
    } else {
        wait.style.fontSize = i + "px";
        wait.style.padding = (pad - i) + "px";
        i--;
    }

    if (parseInt(wait.style.fontSize.replace("px", "")) > 180) {
        window.dotFluxOut = false;
    } else if (parseInt(wait.style.fontSize.replace("px", "")) < 3) {
        window.dotFluxOut = true;
    }

}, 5);

And here is the HTML code snippet:

<p id="wait" align="center" style="font-size: 160px">.</p>

EDIT:

If you want to see this script in action, check out this JSFiddle link.

Answer №1

The issue seems to be that the line-height and margin in relation to font-size are automatically adjusting, causing a layout problem.

To fix this, try setting the line height slightly larger than the maximum font size.

For example:

<p id="wait" align="center" style="font-size: 160px; line-height:200px; margin:0">.</p>

Another issue is the spacing above and below certain characters like "bdfhijklt", which can grow with changes in font size. To address this, consider adding additional spacing between characters.

One possible solution could be:

<p align="center" style="margin:0"><span id="wait" style="font-size:160px">.</span><span style="font-size:200px">&nbsp;</span></p>

I hope this solution works for you!

Answer №2

Ensuring that the line-height of the dot-container matches its height is essential.

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