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script.js
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script.js
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let button = document.getElementById("add");
let todoList = document.getElementById("todoList");
let input = document.getElementById("input");
//local storage,cookies
let todos = [];
window.onload = () => {
todos = JSON.parse(localStorage.getItem("todos")) || [];
todos.forEach((todo) => addtodo(todo));
};
button.addEventListener("click", () => {
todos.push(input.value);
localStorage.setItem("todos", JSON.stringify(todos));
addtodo(input.value);
input.value = "";
});
function addtodo(todo) {
let para = document.createElement("p");
para.innerText = todo;
para.style.textAlign = "center";
todoList.appendChild(para);
para.addEventListener("click", () => {
para.style.textDecoration = "line-through red";
para.style.textDecorationColor="red";
remove(todo);
});
para.addEventListener("dblclick", () => {
todoList.removeChild(para);
remove(todo);
});
}
function remove(todo) {
let index = todos.indexOf(todo);
if (index > -1) {
todos.splice(index, 1);
}
localStorage.setItem("todos", JSON.stringify(todos));
}