Changing Link Image On Hover

my question today probably has an easy answer, however I have found a few working examples but can't seem to transfer it to my web page. I am trying to use an image for a link, and

Solution 1:

Please take a look at https://jsfiddle.net/avzfdc2j/3/

It has been done using css with background image and transition

div.smile {
    background-image: url("http://images.clipartpanda.com/stupidity-clipart-1320682287266972230curius_face.svg.hi.png");
    background-size: 60px 60px;
    height: 60px;
    width: 60px;
    cursor: pointer;
}

div.smile:hover {
    background-image: url("http://images.clipartpanda.com/straight-face-clipart-black-and-white-smiley-face-hi.png");
    transition: ease 0.5s;
}

<a href="http://google.com/"><div class="smile"></div></a>

Solution 2:

You should be changing the src attribute instead:

function hoverImg(x) {
    x.src = "image/arrowBtnHover.png"
    x.style.transition = "ease 0.5s"
}

function normalImg(x) {
    x.src = "image/arrowBtn.png"
}

But I don't think that the transition will work with this.

Solution 3:

Since it's an image, you need to change it's src property, not it's CSS.

function hoverImg(x) {
    x.src = "image/arrowBtnHover.png"
    x.style.transition = "ease 0.5s"
}

function normalImg(x) {
    x.src = "image/arrowBtn.png"
}