Help, im doing this Js COURSE AND I GOT SUPER CONFUSED WITH DOM.

Question

Fill in the blanks to select all images of the page and change their src attribute
var arr = document.
getElementsByTagName("_");
for(var x=0; x<arr.___; x++) {
arr[x].___ = "demo.jpg";
}

Answer 1

Answer is:
1) img
2) length
3) src