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hvvvva/iframe-listener.js

Forked from mladenp/iframe-listener.js
Created December 5, 2022 14:43
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iframe URL redirect listener
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iframe-listener.js
function iframeURLChange(iframe, callback) {
var unloadHandler = function () {
// Timeout needed because the URL changes immediately after
// the `unload` event is dispatched.
setTimeout(function () {
callback(iframe.contentWindow.location.href);
}, 0);
};
function attachUnload() {
// Remove the unloadHandler in case it was already attached.
// Otherwise, the change will be dispatched twice.
iframe.contentWindow.removeEventListener("unload", unloadHandler);
iframe.contentWindow.addEventListener("unload", unloadHandler);
}
iframe.addEventListener("load", attachUnload);
attachUnload();
}
iframeURLChange(document.getElementById("mainframe"), function (newURL) {
console.log("URL changed:", newURL);
});
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