changing CSS with JS, using a function - strips all CSS and re-adds classes passed by 2nd parameter - as an Array
function changeCSS(select, cssArray){
//function that Removes ClassList
//then adds back that that DOM element
// this only works because elem is stored in Memory
var myArray = [];
var elem = document.getElementsByClassName(select);
for(var i=0; i<elem.length; i++){
myArray.push(elem[i]);
}
myArray.forEach((item, index)=>{
console.log(myArray);
myArray[index].removeAttribute('class');
myArray[index].classList.add(select);
});
for(var ii=0; ii<elem.length; ii++){
cssArray.forEach((item, index)=>{
myArray[ii].classList.add(item);
});
}
}