Attempting to update the background color of a class referred to as "Zones" to blue, I've experimented with the following code:
document.getElementsByClassName("Zones").style.backgroundColor = "blue";
However, it doesn't seem to be functioning properly...
In the case that there is a single class present, you have the option to execute this script:
document.getElementsByClassName("Zones")[0].style.backgroundColor = "blue";
If multiple classes are present, then you can utilize the following code snippet:
var zonesLength = document.getElementsByClassName.length;
for(i = 0; zonesLength < i; i++) {
document.getElementsByClassName("Zones")[i].style.backgroundColor = "blue";
}
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