The document.readyState
property can be used to check if the document is ready. From MDN:
Values
The readyState of a document can be one of following:
- loading – The document is still loading.
- interactive – The document has finished loading and the document has been parsed but sub-resources such as images, stylesheets and frames are still loading.
- complete – The document and all sub-resources have finished loading. The state indicates that the load event is about to fire.
Code example:
if(document.readyState === "complete") {
// Fully loaded!
}
else if(document.readyState === "interactive") {
// DOM ready! Images, frames, and other subresources are still downloading.
}
else {
// Loading still in progress.
// To wait for it to complete, add "DOMContentLoaded" or "load" listeners.
window.addEventListener("DOMContentLoaded", () => {
// DOM ready! Images, frames, and other subresources are still downloading.
});
window.addEventListener("load", () => {
// Fully loaded!
});
}