What could be the reason for the absence of the loading sign in Chrome, even though it appears when the code is run on Firefox?

I implemented a function to display a loading screen on my HTML page with Google Maps integration. However, when I called the function popUpLoadingScreen() and dismissLoadingScreen() to show and hide the loading message while rendering map markers, the loading screen didn't appear as expected. Even when I added a breakpoint to investigate the issue, the loading sign only appeared in debug mode but not in normal execution. Can you help me identify where the problem lies?

The relevant HTML section:

<div id="mapLoadingUIId" class="mapLoadingUI">
    Loading...
</div>
<div id="map" class="mapBody"></div>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyASTMSvPns7Zclg5dAGYTMQgtwia5nQy0M&callback=initMap"></script>

The associated CSS styles:

.mapLoadingUI {
display:none;
position: fixed;
left: 324px;
top: 48px;
min-width: 1500px;
min-height: 100px;
z-index: 9999;
background-color:#87cefa;
z-index:1000;
text-align:center;
line-height: 100px;
font-family: Arial;
font-size: 14px;
font-weight: 500;
font-style: normal;
font-stretch: normal;
}

The JavaScript code calling the functions:

function renderWells(wells) {
    popUpLoadingScreen();
    //code to render map markers
    dismissLoadingScreen();
}

Answer №1

It's possible that the code is executing too quickly for you to see the message clearly (This may explain why you can still see it when a breakpoint is set). Additionally, keep in mind that the map rendering process could be asynchronous, causing the renderWells function to finish before the map is fully loaded.

Check out the event documentation for Google Maps to find events that you can handle to determine when the loading process is complete.

For more information, visit: https://developers.google.com/maps/documentation/javascript/events

Answer №2

You may be calling the dismissLoadingScreen() method prematurely. Take a closer look at your code to determine when exactly you are dismissing the loader. It seems like it might be happening too soon.

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