Question

I always get the last onload function, but I need both, Is there any other alternate option without removing any of window.onload event?

window.onload = function(){
    alert("first");
}

window.onload = function(){
    alert("second");
}

Answer 1

When declaring the second one, you can chain with the first.

var lastOnLoad = window.onload;
window.onload = function(){
    lastOnLoad();
    alert("second");
}

You also can make an utility like this :

function addOnLoad(f) {
    var lastOnLoad = window.onload;
    window.onload = function() {
        lastOnLoad();
        f();
    }
}

You’d call it like this :

addOnLoad(function(){
    alert("first");
});

addOnLoad(function(){
    alert("second");
});

EDIT : or you may simply do what ThiefMaster suggests… (I’ll upvote him !).