Assuming it's in the obj
var, this would return an array with the images
var imgSrcArray = obj.artists.artist.image.map(function(image){ return image['#text'] });
ES6:
const imgSrcArray = obj.artists.artist.image.map( image => image['#text'] );
That's it.
if you want to classicaly traverse this array, with this:
var images = obj.artists.artist.image;
for(var i=0; i < images.length; i++){
var image = images[i];
var url = image['#text'];
console.log("url: ", url); //Outputs the img url
}
Cheers