//in html
<img id="img" data-image="user1" src="/assets/user1.jpg" onclick="change_image()" />
//in javascript
const img = document.getElementById('img');
const change_image = function() {
if (img.dataset.image == "user1") {
img.src = "/assets/user2.jpg";
img.dataset.image = "user2";
return
};
if (img.dataset.image == "user2") {
img.src = "/assets/user1.jpg";
img.dataset.image = "user1";
return
};
};
function imagefun() {
var Image_Id = document.getElementById('getImage');
if (Image_Id.src.match("imageName1.jpg")) {
Image_Id.src = "imageName2.jpg";
Image_Id.src = "imageName3.jpg";
}
else {
Image_Id.src = "imageName1.jpg";
}
}
function changeImage() {
if (document.getElementById("imgClickAndChange").src == "http://www.userinterfaceicons.com/80x80/minimize.png"){
document.getElementById("imgClickAndChange").src = "http://www.userinterfaceicons.com/80x80/maximize.png";
} else {
document.getElementById("imgClickAndChange").src = "http://www.userinterfaceicons.com/80x80/minimize.png";
}
}
<p>
<img alt="" src="http://www.userinterfaceicons.com/80x80/minimize.png"
style="height: 85px; width: 198px" id="imgClickAndChange" onclick="changeImage()"/>
</p>
<script>
function changeImage() {
if (document.getElementById("imgClickAndChange").src == "http://www.userinterfaceicons.com/80x80/minimize.png"){
document.getElementById("imgClickAndChange").src = "http://www.userinterfaceicons.com/80x80/maximize.png";
} else {
document.getElementById("imgClickAndChange").src = "http://www.userinterfaceicons.com/80x80/minimize.png";
}
}
</script>