const line = 10;
const column = 10;
const maxRectangle = line*column;
var limitCt = 0;
window.onload = function() {
setInterval("sprinkle()", 1000);
let k = 1;
for (let i = 1; i <= line; i++) {
for (let j = 1; j <= column; j++) {
// selectChangeCt = Math.floor(Math.random()*10)+1
const div = document.createElement('div');
div.id='black_rectangele_' + k;
div.classList.add('box');
div.classList.add('flex');
// div.classList.add('change_ct_' + selectChangeCt);
document.body.appendChild(div);
k++;
}
const div2 = document.createElement('div');
document.body.appendChild(div2);
}
// sprinkle();
}
function sprinkle(){
ct = 1;
// console.log(ct);
// console.log(colorString);
let colorString = setColor();
while(ct <= maxRectangle){
let colorString = setColor();
let attr = document.getElementById("black_rectangele_" + ct);
attr.style.background = colorString;
randomNum = Math.random();
if (randomNum < 0.5){
if (!attr.classList.contains('box_disappear')) {
attr.classList.add("box_disappear");
attr.style.background = "#FFF";
} else {
attr.classList.remove("box_disappear");
}
}
ct++;
};
}
function setColor(){
let colorString = "#";
for (let i = 0;i < 6; i++){
colornum = Math.floor(Math.random()*16);
colorString += colornum.toString(16);
// console.log(colorString);
}
return colorString;
}