Using javascript, I want to change the style of class .s
into
.s {
display: block;
}
Why this cannot work:
document.getElementsByClassName('s').style.display='block';
See Question&Answers more detail:osUsing javascript, I want to change the style of class .s
into
.s {
display: block;
}
Why this cannot work:
document.getElementsByClassName('s').style.display='block';
See Question&Answers more detail:osdocument.getElementsByClassName
: returns a set of elements which have all the given class names.
You may have multiple elements with this class name. so you need to provide index like
document.getElementsByClassName('s')[0].style.display='block';
Inorder to apply for style for all elements with same class name:
var ele = document.getElementsByClassName('s');
for (var i = 0; i < ele.length; i++ ) {
ele[i].style.display = "block";
}