i don't understand this

Question

var arr = document.
getElementsByTagName("");
for(var x=0; x<arr.
; x++) {
}

; x++) {
arr[x]. = "demo.jpg";
}

Answer 1

There are some syntax errors in this code. But I think I can recreate it describe it to you

var arr = document.getElementsByTagName("img");
//should be img according to the code.
for(var x=0; x<arr.length ; x++) {
arr[x].src = "demo.jpg";
}

What happens in this code is that an array of HTMLElement containing img elements stored in a variable x.

In next lines it transverse through all the images stored in that array and change the src attribute to demo.jpg.

So if you run this code after placing some img tags in HTML you will get same image in all img elements

Answer 2

GamingBase 854 no it doesn't bother me.

In that code you store the element with id par in a variable called par and element#node in var node

Answer 3

thanks this answer really helped but i have another question, var par = document.getElementById("par");
var node = document.getElementById("node");
. ( ); i hope my questions do not bother you too much