建立自适应的HTML页面
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no" />
<title>ToDoList—最简单的待办事项列表</title>
<meta name="description" content="ToDoList无须注册即可使用，数据存储在用户浏览器的html5本地数据库里，是最简单最安全的待办事项列表应用！" />
<link rel="stylesheet" href="index.css">
</head>
<body>
<header>
<section>
<form action="javascript:postaction()" id="form">
<label for="title">ToDoList</label>
<input type="text" id="title" name="title" placeholder="添加ToDo" required="required" autocomplete="off" />
</form>
</section>
</header>
<section>
<h2 onclick="save()">正在进行 <span id="todocount"></span></h2>
<ol id="todolist" class="demo-box">
</ol>
<h2>已经完成 <span id="donecount"></span></h2>
<ul id="donelist">
</ul>
</section>
<footer>
<a href="javascript:clear();">clear</a>
</footer>
<script type="text/javascript" src="index.js"></script>
</body>
</html>
引入css样式
body {margin:0;padding:0;font-size:16px;background: #CDCDCD;}
header {height:50px;background:#333;background:rgba(47,47,47,0.98);}
section{margin:0 auto;}
label{float:left;width:100px;line-height:50px;color:#DDD;font-size:24px;cursor:pointer;font-family: "Helvetica Neue",Helvetica,Arial,sans-serif;}
header input{float:right;width:60%;height:24px;margin-top:12px;text-indent:10px;border-radius:5px;box-shadow: 0 1px 0 rgba(255,255,255,0.24), 0 1px 6px rgba(0,0,0,0.45) inset;border:none}
input:focus{outline-width:0}
h2{position:relative;}
span{position:absolute;top:2px;right:5px;display:inline-block;padding:0 5px;height:20px;border-radius:20px;background:#E6E6FA;line-height:22px;text-align:center;color:#666;font-size:14px;}
ol,ul{padding:0;list-style:none;}
li input{position:absolute;top:2px;left:10px;width:22px;height:22px;cursor:pointer;}
p{margin: 0;}
li p input{top:3px;left:40px;width:70%;height:20px;line-height:14px;text-indent:5px;font-size:14px;}
li{height:32px;line-height:32px;background: #fff;position:relative;margin-bottom: 10px;
padding:0 45px;border-radius:3px;border-left: 5px solid #629A9C;box-shadow: 0 1px 2px rgba(0,0,0,0.07);}
ol li{cursor:move;}
ul li{border-left: 5px solid #999;opacity: 0.5;}
li a{position:absolute;top:2px;right:5px;display:inline-block;width:14px;height:12px;border-radius:14px;border:6px double #FFF;background:#CCC;line-height:14px;text-align:center;color:#FFF;font-weight:bold;font-size:14px;cursor:pointer;}
footer{color:#666;font-size:14px;text-align:center;}
footer a{color:#666;text-decoration:none;color:#999;}
@media screen and (max-device-width: 620px) {section{width:96%;padding:0 2%;}}
@media screen and (min-width: 620px) {section{width:600px;padding:0 10px;}}
引入js
function clear(){
localStorage.clear();
load();
}
function postaction(){
var title = document.getElementById("title");
if(title.value == "") {
alert("内容不能为空");
}else{
var data=loadData();
var todo={"title":title.value,"done":false};
data.push(todo);
saveData(data);
var form=document.getElementById("form");
form.reset();
load();
}
}
function loadData(){
var collection=localStorage.getItem("todo");
if(collection!=null){
return JSON.parse(collection);
}
else return [];
}
function saveSort(){
var todolist=document.getElementById("todolist");
var donelist=document.getElementById("donelist");
var ts=todolist.getElementsByTagName("p");
var ds=donelist.getElementsByTagName("p");
var data=[];
for(i=0;i<ts.length; i++){
var todo={"title":ts[i].innerHTML,"done":false};
data.unshift(todo);
}
for(i=0;i<ds.length; i++){
var todo={"title":ds[i].innerHTML,"done":true};
data.unshift(todo);
}
saveData(data);
}
function saveData(data){
localStorage.setItem("todo",JSON.stringify(data));
}
function remove(i){
var data=loadData();
var todo=data.splice(i,1)[0];
saveData(data);
load();
}
function update(i,field,value){
var data = loadData();
var todo = data.splice(i,1)[0];
todo[field] = value;
data.splice(i,0,todo);
saveData(data);
load();
}
function edit(i)
{
load();
var p = document.getElementById("p-"+i);
title = p.innerHTML;
p.innerHTML="<input id='input-"+i+"' value='"+title+"' />";
var input = document.getElementById("input-"+i);
input.setSelectionRange(0,input.value.length);
input.focus();
input.onblur =function(){
if(input.value.length == 0){
p.innerHTML = title;
alert("内容不能为空");
}
else{
update(i,"title",input.value);
}
};
}
function load(){
var todolist=document.getElementById("todolist");
var donelist=document.getElementById("donelist");
var collection=localStorage.getItem("todo");
if(collection!=null){
var data=JSON.parse(collection);
var todoCount=0;
var doneCount=0;
var todoString="";
var doneString="";
for (var i = data.length - 1; i >= 0; i--) {
if(data[i].done){
doneString+="<li draggable='true'><input type='checkbox' onchange='update("+i+",\"done\",false)' checked='checked' />"
+"<p id='p-"+i+"' onclick='edit("+i+")'>"+data[i].title+"</p>"
+"<a href='javascript:remove("+i+")'>-</a></li>";
doneCount++;
}
else{
todoString+="<li draggable='true'><input type='checkbox' onchange='update("+i+",\"done\",true)' />"
+"<p id='p-"+i+"' onclick='edit("+i+")'>"+data[i].title+"</p>"
+"<a href='javascript:remove("+i+")'>-</a></li>";
todoCount++;
}
};
todocount.innerHTML=todoCount;
todolist.innerHTML=todoString;
donecount.innerHTML=doneCount;
donelist.innerHTML=doneString;
}
else{
todocount.innerHTML=0;
todolist.innerHTML="";
donecount.innerHTML=0;
donelist.innerHTML="";
}
var lis=todolist.querySelectorAll('ol li');
[].forEach.call(lis, function(li) {
li.addEventListener('dragstart', handleDragStart, false);
li.addEventListener('dragover', handleDragOver, false);
li.addEventListener('drop', handleDrop, false);
onmouseout =function(){
saveSort();
};
});
}
window.onload=load;
window.addEventListener("storage",load,false);
var dragSrcEl = null;
function handleDragStart(e) {
dragSrcEl = this;
e.dataTransfer.effectAllowed = 'move';
e.dataTransfer.setData('text/html', this.innerHTML);
}
function handleDragOver(e) {
if (e.preventDefault) {
e.preventDefault();
}
e.dataTransfer.dropEffect = 'move';
return false;
}
function handleDrop(e) {
if (e.stopPropagation) {
e.stopPropagation();
}
if (dragSrcEl != this) {
dragSrcEl.innerHTML = this.innerHTML;
this.innerHTML = e.dataTransfer.getData('text/html');
}
return false;
}
