Thanks for the question. Actually, if I had plenty of elements on my webpage, still my JS file would be of the same length. Here in the JS is just adding the class dark-mode to the body tag when the button with the class myBtn is pressed. If more element is there our CSS file will increase. For eg: if I add a div tag with background color blue by default, and want to change it to yellow in the dark-mode, we just had to add the code below in the CSS file:
.dark-mode>div{background:yellow;}
May this example help. :-)
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Thanks for the question. Actually, if I had plenty of elements on my webpage, still my JS file would be of the same length. Here in the JS is just adding the class dark-mode to the
bodytag when the button with the class myBtn is pressed. If more element is there our CSS file will increase. For eg: if I add adivtag with background color blue by default, and want to change it to yellow in the dark-mode, we just had to add the code below in the CSS file:May this example help. :-)