<div class="box" style="background: red;">box</div>
<div class="box" style="background: blue;">box</div>
<div class="box" style="background: yellow;">box</div>
<div class="box" style="background: red;">box</div>
<div class="box" style="background: blue;">box</div>
<script>
function inter(i){
var οnclick=function(e){
console.log(i);
}
return onclick;
}
var box = document.querySelectorAll('.box');
for(var i=0;i<box.length;i++){
box[i].οnclick=inter(i);
}
</script>
