hover an element in js code example

Example 1: get hover element js

let test = document.getElementById("test");
  
// This handler will be executed only once when the cursor
// moves over the unordered list
test.addEventListener("mouseenter", function( event ) {   
  // highlight the mouseenter target
  event.target.style.color = "purple";

  // reset the color after a short delay
  setTimeout(function() {
    event.target.style.color = "";
  }, 500);
}, false);

Example 2: hover con js

// Creamos el evento mouseover para cada imagen
	imagenes[i].addEventListener("mouseover", function(e){
		document.getElementById("mostrar").style.backgroundImage="url('"+e.target.currentSrc+"')";
	});
 
// Creamos el evento mouseout para cada imagen
imagenes[i].addEventListener("mouseout", function(e){
  document.getElementById("mostrar").style.backgroundImage="";
});