var filter = document.getElementById("filter");
var list = document.querySelector(".repos");
filter.addEventListener("keyup", function() {
var value = filter.value.toUpperCase();
var items = list.getElementsByTagName("li");
for (var i = 0; i < items.length; i++) {
var item = items[i];
var name = item.querySelector("h1 a");
if (name.innerHTML.toUpperCase().indexOf(value) != -1) {
item.style.display = "list-item";
} else {
item.style.display = "none";
}
}
});