window onload

1window.onload = function() {
2  // Some code
3};
4

1//Use window.onload to to execute JavaScript only after the HTML has loaded
2//Syntax: 
3window.onload = function() {
4  //JavaScript goes here
5}

1//use
2window.onload=()=>{};

1window.onload = function() {
2  init();
3  doSomethingElse();
4};
5