How to download minified / bundled js file by javascript on page load?

Question

User-454825017 posted

This way i have bundled my js files

bundles.Add(new ScriptBundle("~/bundles/bs-jq-bundle").Include(
                      "~/Scripts/bootstrap.js",
                      "~/Scripts/jquery-3.3.1.js"));

I do not want to use @Scripts.Render("~/bundles/bootstrap") to download file at client side. rather i want to download all bootstrap js file when page load means i want to do defer loading by javascript

I know below way i can download that bundle by javascript but for that i have to know the exact token. from where to get token value ?

<script type="text/javascript">
function downloadJSAtOnload() {
            var element = document.createElement("script");
            element.src = "/Scripts/JQueryBundle?v=vFo0kKa-_2_wGzi6Q0u-IemkcVvXrEdKz7OrQ9g-y_c1";
            document.body.appendChild(element);
        }


</script>


// Check for browser support of event handling capability
if (window.addEventListener)
window.addEventListener("load", downloadJSAtOnload, false);
else if (window.attachEvent)
window.attachEvent("onload", downloadJSAtOnload);
else
window.onload = downloadJSAtOnload;

i also know when any file code changes then token value also changed. so if i use static token then how that works always.

see the javascript code which download bundled js file on page load and where a static or fixed token used to download bundled js file at client side. so tell me how does it work when any js file code changed in that bundle ?

please guide me. thanks