<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>todoList待办事项</title> <script src="./js/jquery.min.js"></script> </head> <body> <header> <section> <label for="title">ToDoList</label> <input type="text" id="title" placeholder="添加ToDo"> </section> </header> <section> <h2>正在进行<span id="rodocount"></span></h2> <ol id="todolist" class="demo-box"> </ol> <h2>已经完成<span id="rodocount"></span></h2> <ul id="donelist"> </ul> </section> <footer> Copyright ©2014 todolist.cn </footer> <script> var todolist = [{ title: '我今天吃了八个馒头', done: false }, { title: '我今天学习jq', done: false }, ]; localStorage.setItem("todo", JSON.stringify(todolist)); //本地的数组转换为json.stringfy(); var data = localStorage.getItem("todo"); console.log(typeof data); //获取本地存储数据需要把字符串数据转换为对象形式json.parse data = JSON.parse(data); console.log(data); $(function() { //按下回车 把完整数据存储到本地存储里面 $("#title").on("keydown", function(event) { if (event.keyCode === 13) { //先读取本地存储原来的数据 var local = getDate(); console.log(local); } }) //读取本地存储的数据 function getDate() { var data = localStorage.getItem("todolist"); if (data !== null) { //本地存储里面的数据是字符串格式的 return JSON.parse(data); } else { //返回一个数组 return []; } } }); </script> </body> </html>
