几乎完成(最后)建立一个简单的待办事项清单。
我试图改进我迄今为止所做的工作。
一个大问题是,如果你要为例如添加任务'任务1'然后'任务2'数组自然会按顺序保存它们。
问题在于你是否已经完成了#39;说任务2,然后'未完成'它会回到列表的顶部。
但是我使用本地存储来保存我的数据,所以即使它在刷新时位于前端列表的顶部也不会留在那里,因为在阵列中它就位2。
我知道'不合时宜的'方法,但不知道如何在我已完成/未完成的任务方法中使用它。
基本上我希望我的任务从完全返回到未完成是优先级,然后转到未完成的任务列表的顶部,从而将该订单保存在我的本地存储阵列中。
https://jsfiddle.net/1uopkysn/
由于
JS
// To do list
var storeToDos = [];
// Cache DOM
var addToDo = document.getElementById('add-to-do');
var taskHolder = document.getElementById('task-holder');
var uncompleteTasks = document.getElementById('uncompleted-tasks');
var completedTasks = document.getElementById('completed-tasks');
// Bind events
var bindEvents = function(listItem, checkboxEventHandler) {
// Delete
var deleteToDo = listItem.querySelector('.delete-to-do');
deleteToDo.addEventListener('click', deleteTask);
// Edit
listItem.querySelector('.edit-to-do').addEventListener('click', editTask);
listItem.querySelector('.edit-holder').addEventListener('keyup', editTaskEnter);
// Checkbox
var checkbox = listItem.querySelector('input.edit-to-do');
checkbox.onchange = checkboxEventHandler;
}
// Create list item
var createListItem = function() {
var listItem = document.createElement('li');
var deleteToDo = document.createElement('div');
deleteToDo.innerHTML = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="none" stroke="#FFF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" d="M7.1 7.1l9.8 9.8M7.1 16.9l9.8-9.8"/></svg>';
deleteToDo.classList.add('delete-to-do');
var editToDo = document.createElement('div');
editToDo.innerHTML = '<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 24 24"><path fill="none" stroke="#FFF" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" d="M16 3l5 5L8 21H3v-5z"/></svg>';
editToDo.classList.add('edit-to-do');
var toDoStatus = document.createElement('input');
toDoStatus.type = 'checkbox';
toDoStatus.classList.add('edit-to-do');
var editHolder = document.createElement('input');
editHolder.type = 'text';
editHolder.classList.add('edit-holder');
listItem.appendChild(deleteToDo);
listItem.appendChild(editToDo);
listItem.appendChild(toDoStatus);
listItem.appendChild(editHolder);
return listItem;
}
// Add task
var addTask = function(e) {
var listItem = createListItem();
var taskHolderValue = taskHolder.value;
if(taskHolderValue) {
var taskHolderElement = document.createElement('label');
taskHolderElement.classList.add('to-do-item');
listItem.insertBefore(taskHolderElement, listItem.childNodes[0]);
var storeToDosObj = {
value: '',
id: null,
completed: false
}
storeToDosObj.value = taskHolderValue;
var listId = storeToDosObj.id = Date.now();
listItem.id = listId;
uncompleteTasks.insertBefore(listItem, uncompleteTasks.childNodes[0]);
var storedToDos = localStorage.getItem('todos');
if(storedToDos) {
var storedToDosArr = JSON.parse(localStorage.todos);
storedToDosArr.push(storeToDosObj);
localStorage.setItem('todos', JSON.stringify(storedToDosArr));
} else {
console.log(storeToDos);
storeToDos.push(storeToDosObj);
localStorage.setItem('todos', JSON.stringify(storeToDos));
}
taskHolderElement.innerHTML = taskHolderValue;
bindEvents(listItem, taskCompleted);
taskHolder.value = '';
} else {
alert("You didn't add a to a to do!");
}
}
var addTaskEnter = function(e) {
var key = 'which' in e ? e.which : e.keyCode;
if(key === 13) {
addTask();
}
}
// Delete task
var deleteTask = function() {
var listItem = this.parentNode;
var parentItem = listItem.parentNode;
var getToDos = JSON.parse(localStorage.getItem('todos'));
for(var b=0; b<getToDos.length; b++) {
if(getToDos[b].id == listItem.id) {
getToDos.splice(b, 1);
localStorage.setItem('todos', JSON.stringify(getToDos));
}
}
parentItem.removeChild(listItem);
}
// Edit task
var editTask = function() {
var defaultValue = this.parentNode.querySelector('label').innerHTML;
var listItem = this.parentNode;
var listParent = this.parentNode;
var editedValue = listParent.querySelector('input.edit-holder').value;
if(listItem.classList.contains('editing') && editedValue) {
listParent.querySelector('label').innerHTML = editedValue;
var storedLocalStorage = JSON.parse(localStorage.todos);
for(var d=0; d<storedLocalStorage.length; d++) {
if(storedLocalStorage[d].id == listItem.id) {
storedLocalStorage[d].value = editedValue;
localStorage.setItem('todos', JSON.stringify(storedLocalStorage));
}
}
}
listItem.classList.toggle('editing');
listParent.querySelector('input.edit-holder').value = '';
}
// Edit task enter
var editTaskEnter = function(e) {
var key = 'which' in e ? e.which : e.keyCode;
if(key === 13) {
editTask.call(this);
}
}
// Task completed
var taskCompleted = function() {
var listItem = this.parentNode;
var storedCompletion = JSON.parse(localStorage.getItem('todos'));
if(storedCompletion) {
if(listItem.classList.contains('editing')) {
}
for(var e=0; e<storedCompletion.length; e++) {
if(storedCompletion[e].id == listItem.id) {
if(storedCompletion[e].completed === true) {
this.parentNode.classList.add('completed');
uncompleteTasks.insertBefore(listItem, uncompleteTasks.childNodes[0]);
this.parentNode.classList.remove('completed');
bindEvents(listItem, taskCompleted);
storedCompletion[e].completed = false;
} else {
completedTasks.insertBefore(listItem, completedTasks.childNodes[0]);
this.parentNode.classList.add('completed');
bindEvents(listItem, taskUncompleted);
storedCompletion[e].completed = true;
}
localStorage.setItem('todos', JSON.stringify(storedCompletion));
}
}
}
}
// Task uncompleted
var taskUncompleted = function() {
var listItem = this.parentNode;
uncompleteTasks.insertBefore(listItem, uncompleteTasks.childNodes[0]);
this.parentNode.classList.remove('completed');
bindEvents(listItem, taskCompleted);
if(localStorage) {
var storedCompletion = JSON.parse(localStorage.getItem('todos'));
}
for(var f=0; f<storedCompletion.length; f++) {
if(storedCompletion[f].id == listItem.id) {
storedCompletion[f].completed = false;
localStorage.setItem('todos', JSON.stringify(storedCompletion));
}
}
}
// Add task
addToDo.addEventListener("click", addTask);
taskHolder.addEventListener("keyup", addTaskEnter);
// Loop over complete tasks
for(i=0; i<completedTasks.length; i++) {
var listItem = completedTasks[i];
uncompleteTasks.appendChild(listItem);
bindEvents(listItem, completedTasks);
}
// Render local storage
var getToDos = JSON.parse(localStorage.getItem('todos'));
console.log(getToDos);
if(getToDos) {
for(i=0; i<getToDos.length; i++) {
var listItem = createListItem();
listItem.id = getToDos[i].id;
var storedListItem = document.createElement('label');
storedListItem.innerHTML = getToDos[i].value;
listItem.insertBefore(storedListItem, listItem.childNodes[0]);
if(getToDos[i].completed === true) {
listItem.querySelector('input').checked = true;
completedTasks.appendChild(listItem);
listItem.classList.add('completed');
} else {
uncompleteTasks.appendChild(listItem);
}
bindEvents(listItem, taskCompleted)
}
}
答案 0 :(得分:1)
您可以将时间戳与项目关联,并根据已完成和未完成列表中的时间戳显示它们。但是LocalStorage中没有排序方法,同样不能在具体之前或之后插入。
您可以像这样对从json检索到的数组进行排序(取自this answer)。你可以使用时间戳来排序数组 - JSFiddle here。
ArrayList
希望这有帮助。
答案 1 :(得分:0)
在内存中更改内容时如何更新存储的数组? 因此,每次更改视图时,都会更新&#34;模型&#34;,从而更新JSON数组并再次保存。