So I made a small version of my problem. Here I am adding text into an input element. But when it is added it doesnt trigger the event listener.
function testFunction() {
document.getElementById("testInput").addEventListener("change", () => {
console.log("hi");
});
}
function testText() {
document.getElementById("testInput").value = "Hello there";
}
testFunction();<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="styles.css" />
<title>Document</title>
</head>
<body>
<script></script>
<button onclick="testText()" style="height: 20px"></button>
<input id="testInput" />
<script src="script.js"></script>
</body>
</html>You need to create the event manually and use dispatchEvent() method to fire the event to the target element.
function testFunction() {
document.getElementById("testInput").addEventListener("input", () => {
console.log("hi");
});
}
function testText() {
document.getElementById("testInput").value = "Hello there";
let event = new Event("input");
document.getElementById("testInput").dispatchEvent(event);
}
testFunction();<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta http-equiv="X-UA-Compatible" content="IE=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<link rel="stylesheet" href="styles.css" />
<title>Document</title>
</head>
<body>
<script></script>
<button onclick="testText()" style="height: 20px"></button>
<input id="testInput" />
<script src="script.js"></script>
</body>
</html>