Window.onclick overwriting code

JavaScript
1

why if I write two window.onclick the first one will overwrite the second one, so only the first one would work, it is the onclick event doing this or window?

2

Can we see some code?

window.addEventListener("click",()=>{ console.log('wow')});
window.addEventListener("click",()=>{ console.log('wow 2')});

// On click 

Output: 
//VM257:1 wow
//VM270:1 wow 2

If you are doing something like this:


<button  onclick="myFunction3()" onclick="myFunction()" >Click me</button>

<p id="demo"></p>

<script>
function myFunction() {
  document.getElementById("demo").innerHTML = "Hello World";
}

function myFunction3() {
  document.getElementById("demo").innerHTML = "Hello World3";
}
</script>

Only the first onclick is used.

This is obviously a wild guess. Is this what you are trying to do?