load js

JavaScript
// Log a message when the page is fully loaded:

window.addEventListener('load', (event) => {
  console.log('page is fully loaded');
});window.addEventListener('load', (event) => {
  console.log('page is fully loaded');
});// The same, but using the onload event handler property:

window.onload = (event) => {
  console.log('page is fully loaded');
};
const log = document.querySelector('.event-log-contents');
const reload = document.querySelector('#reload');

reload.addEventListener('click', () => {
  log.textContent ='';
  window.setTimeout(() => {
      window.location.reload(true);
  }, 200);
});

window.addEventListener('load', (event) => {
    log.textContent = log.textContent + 'load\n';
});

document.addEventListener('readystatechange', (event) => {
    log.textContent = log.textContent + `readystate: ${document.readyState}\n`;
});

document.addEventListener('DOMContentLoaded', (event) => {
    log.textContent = log.textContent + `DOMContentLoaded\n`;
});


Source

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