var imagePath="./image/seperate-";
var numberOfImage=100;
var parentDIV = document.getElementsByClassName("grid-container-parent")[0];
for(var i=0;i<numberOfImage;i++){
var tempDIV= document.createElement('div');
tempDIV.setAttribute('class','grid-container');
var innerHTML= `<img src='`+(imagePath+i)+`.png'></img>`
tempDIV.innerHTML=innerHTML;
parentDIV.appendChild(tempDIV);
}