I'm experiencing some difficulties when attempting to add style to a specific class in Trailhead Salesforce. I have tried various methods listed below, but none of them seem to be working:
document.body.style.setWidth = 100%;
document.getElementsByClassName("overlay").setWidth = 100%;
document.querySelectorAll(".overlay").setWidth = 100%;
document.getElementById("sideNav").style.width = 100%;
What is the most effective way to apply styling when an event occurs in Trailhead Salesforce?
In my opinion, it would be better if 100% was represented as a string. You could try using "100%" instead of just 100%. Additionally, consider using the property width instead of setWidth.
Ensure to enclose the right-hand assigned value in quotes for the proper execution of the last line.
In JavaScript, a percentage value is considered invalid; it must be either a Number or a String. Be cautious not to mix up CSS values with JavaScript data types.
document.getElementById("sideNav").style.width = '100%'; // Applying override to CSS#sideNav {
width: 64px; /* Default */
height: 64px;
background: red;
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