Change image source with JavaScript

Question

So I\'m new with JavaScript (this is actually my first attempt to make something work) and I\'m having a bit of trouble. I thought I had enough knowledge to make this work,

Answer 1

Try this!

function changeimage() {
    var image = document.getElementById('imagem');
    if (image.src.match("img")) {
        for(i = 1; i <= 3; i++) {
            image.src = "img/image2"+i+".png";
        }
    } else {
        image.src = "img/image1.png";
    }
}