how can i change the inner html by getting element by index  

i want to change the content of cells according to their index values

```html
<table>
<tr><td></td><td></td></tr>
<tr><td></td><td></td></tr>
<tr><td></td><td></td></tr>
</table>

```

```js
function LFLS() {
    // LFLS => load from local Storage
    for (i = 0; i < localStorage.length; i++) {
        key = localStorage.key(i);//it return values like ("1,2","2,5", etc.)
        console.log(key)
        row = key.split(",")[0];
        col = key.split(",")[1];
//how to get the cell by row and col
}
}

```