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iamFoxx / automatic_utm.js
Created January 13, 2024 01:19
Collecting UTMs and automatic form filling
(function() {
function cretaeField(name, value, form) {
if (value === null) return;
var input = document.createElement('input');
input.type = 'hidden';
input.name = name;
input.value = value;
form.appendChild(input);
}
const valueExists = (value) => {
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Event Delegation</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<style type="text/css">
body {
margin: 1em auto;