Sprawdź, czy ten sam tekst jest powtarzany JavaScript Todo-App
$('#add-items').click(function(event) {
var item = $('#todo-list-item').val().trim();
let itemCount = $("#list-items li").filter((i, li) => {
let text = $(li).text().trim().toLowerCase();
console.log(text)
}).length;
if (itemCount > 0) {
alert("There is already such a task");
return;
}
if (item && itemCount === 0) {
$('#list-items').append("<li><input class='checkbox' type='checkbox'/>" + item + "<a class='remove'>x</a><hr></li>");
$('#todo-list-item').val("");
}
});
Elated Elk