Include a JavaScript script with JavaScript

Question

To dynamically include a JavaScript file in a web page, you'd normally insert a <script> tag pointing to your script. For example:

var js_file= document.createElement("script");
js_file.src='http://example.com/js.js';
document.body.appendChild(js_file);

Write JavaScript code will load an external JavaScript file in the current page and:

• Shortest valid answer wins
• The file is hosted on https://pastebin.com/raw/rV6dDDj9 (content is console.log('Good job!');)
• The code must be vanilla JavaScript (no jQuery, etc.)
• Answer validity test is done in the web browser console. Criteria:
  • URL requested and JS file downloaded.
  • Console prints Good job!

Answer 1

49 bytes

document.write`<script src=//v.ht/KvtI></script>`

no one clearly said: you should keep current page content

Answer 2

77 75 71 bytes

with(document)body.appendChild(createElement`script`).src=`//v.ht/Xa33`

Edit: Saved 2 bytes thanks to @jrich. Saved 4 bytes thanks to @Bálint.

Answer 3

75 bytes

document.body.appendChild(document.createElement`script`).src="//v.ht/Xa33"

@Neil's answer was quite similar to this, but he found an ingenious shortcut involving with(...). I will not copy it here, because he came up with it.

Thanks to @Bálint for the short URL.

Answer 4

72 bytes

(D=document).body.appendChild(D.createElementscript).src="//v.ht/Xa33"

for using more than once(3 call):

92 then always 36

(D=document)[B="body"][A="appendChild"](D[C="createElement"](s="script")).src="//v.ht/Xa33"; D[B][A](D[C](s)).src="//v.ht/Xa33"; D[B][A](D[C](s)).src="//v.ht/Xa33"

93 then always 35

D=document,B=D.body,B.a=B.appendChild,D.c=D.createElement; B.a(D.c`script`).src="//v.ht/Xa33"; B.a(D.c`script`).src="//v.ht/Xa33"; B.a(D.c`script`).src="//v.ht/Xa33";

99 then always 30

D=document,B=D.body,B.a=B.appendChild,D.c=D.createElement,s="script"; B.a(D.c(s)).src="//v.ht/Xa33"; B.a(D.c(s)).src="//v.ht/Xa33"; B.a(D.c(s)).src="//v.ht/Xa33";

99 then always 26

D=document,A=e=>D.body.appendChild(e),C=e=>D.createElement(e),s="script"; A(C(s)).src="//v.ht/Xa33"; A(C(s)).src="//v.ht/Xa33"; A(C(s)).src="//v.ht/Xa33";

87 then always 15

S=e=>document.body.appendChild(document.createElement("script")).src=e; S`//v.ht/Xa33`; S`//v.ht/Xa33`; S`//v.ht/Xa33`;

88 then always 22

S=e=>document.body.appendChild(document.createElement("script")); S().src="//v.ht/Xa33"; S().src="//v.ht/Xa33"; S().src="//v.ht/Xa33";

Answer 5

89 bytes

n=[];for(i in d=document)n.push(i);d.body[n[173]](d[n[41]]`script`).src=`//goo.gl/rPQ0Jk`

This is incredibly browser-dependent. Actually even worse than that, it pretty much only works on codegolf.stackexchange.com, in the browser console, in FireFox. Ah well.

Please don't get too mad when it (likely) doesn't work on your particular browser configuration, since if it is even slightly different from mine it could fail.

(yeah, probably invalid because of that. Not going to win anyway.)