Loading the LeadDyno JavaScript asynchronously with JS

In some cases, loading LeadDyno's JavaScript directly with your HTML file is not ideal. As an alternative, you can load the JavaScript asynchronously in your app like so:

function loadLeadDyno() {

return new Promise((res) => {

const sc = document.createElement("script");

sc.onload = function () {



sc.src = "https://static.leaddyno.com/js";





This function can be placed anywhere in your code to load the LeadDyno JavaScript. The LeadDyno object will then be automatically available on the `window` object, where you can later access it like so:

window.LeadDyno; // the base object

window.LeadDyno.recordVisit(); // record a visit

The function will also resolve with the LeadDyno object, so you can access it and pass it around without directly accessing the window object. See below for examples.

Using a standard JavaScript promise

loadLeadDyno().then(ld => {

ld.key = "[YOUR_PUBLIC_KEY]";



Using async/await

const leadDyno = await loadLeadDyno(); // async await form

leadDyno.key = "[YOUR_PUBLIC_KEY]";


As always, are here to help. Contact us at any time and our Support team will be there for you.