• 基于html实现一个todolist待办事项

    index.html

    <!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>todolist</title>
    <link rel="stylesheet" type="text/css" href="css/01.css">
</head>
<body>
    <div class="container">
        <!-- top nav    start-->
        <div class="nav">
            <div class="topNav">
                <h3>TodoList</h3>
                <form id="form" action='javascript:postaction()' method='post'>
                    <input type="text" name="todoList" id="inputTodo" placeholder="输入内容" required="required" autocomplete="off">  
                </form>
            </div>
        </div>
        <!-- top nav   end -->
        <!-- todo list   start -->
        <div class="todo">
            <div class="lists">
                <div class="todoNav" id="todoNav">
                    <span class="title1">正在进行</span>
                    <span class="todoCount" id="todoCount">0</span>
                </div>
                <div class="todoList">
                    <ul id="todoList">
                        <!-- 动态添加li -->
                        <!-- <li><input type="checkbox" name="" checked="checked">事项内容<span>-</span></li> -->
                    </ul>
                </div>
            </div>
        </div>
        <!-- todo list   end -->
        <!-- done list start -->
        <div class="done">
            <div class="lists1">
                <div class="doneNav">
                    <span class="title2">已经完成</span>
                    <span class="doneCount" id="doneCount">0</span>
                </div>
                <div class="doneList">
                    <ul id="doneList">
                        <!-- 动态添加li -->
                        <!-- <li>3hsjhdjshdjhdjskas</li> -->
                    </ul>
                </div>
            </div>
        </div>
        <!-- done list end -->
        <!-- site foot -->
        <div class="siteFoot">
            <div class="foot">
                <p>Copyright © 2014 todolist.cn <a style="color: #8c9796;" href="javascript:clear()">clear</a></p>
            </div>
        </div>
    </div>
</body>
<script type="text/javascript" src="js/jquery-3.3.1.js"></script>
<script type="text/javascript" src="js/01.js"></script>

</html>
    View Code

    01.css

    *{
    padding:0;
    margin:0;
}

body{
    background: #dfe1e1;
}
ul{
    list-style: none;
}
.container{}

/*top nav*/
.nav{
     100%;
    height: 50px;
    background: rgba(0,0,0,0.7);
}
.topNav{
     600px;
    height: 26px;
    color: white;
    margin:auto;
    /*line-height: 50px;*/
    padding-top: 12px;
    padding-bottom: 12px;
}
.topNav h3{
    float: left;
}
.topNav input{
    float: right;
     380px;
    height: 24px;
    box-shadow: 1px 1px 10px #dfe1e1 inset;
    border-radius: 10px;
}

/*todo list*/
.todo{
     100%;
    height: 100%;
}
.lists{
     600px;
    height: 100%;
    padding: 20px 0 10px 0;
    margin:auto;
}
.todoNav{
     600px;
    height: 30px;
}
.title1{
     300px;
    height: 18px;
    font-size: 18px;
    font-weight: bold;
    color: black;
    float: left;
    line-height: 18px;
/*    margin-top: 20px;
    margin-bottom: 10px;*/

}
.todoCount{
     18px;
    height: 18px;
    border-radius: 50%;
    font-size: 13px;
    font-weight: bold;
    color: black;
    float: right;
    text-align: center;
    line-height: 18px;
    background: #82b5b2;
    /*margin-top: 20px;
    margin-bottom: 10px;*/
}
.todoList{
     600px;
}
.todoList ul{
     600px;
    margin:auto;
}
.todoList li{
     587px;
    height: 30px;
    padding:0 5px;
    margin:5px 0;
    background: white;
    line-height:30px;
    border-top-left-radius: 5px;
    border-bottom-left-radius: 5px;
    border-left:3px solid #0b423e;
}


/*done list*/
.done{
     100%;
    height: 100%;
}
.lists1{
     600px;
    height: 100%;
    padding: 20px 0 10px 0;
    margin:auto;
}
.doneNav{
     600px;
    height: 30px;
}
.title2{
     300px;
    height: 18px;
    font-size: 18px;
    font-weight: bold;
    color: black;
    float: left;
    line-height: 18px;
    /*margin-top: 20px;
    margin-bottom: 10px;*/

}
.doneCount{
     18px;
    height: 18px;
    border-radius: 50%;
    font-size: 13px;
    font-weight: bold;
    color: black;
    float: right;
    text-align: center;
    line-height: 18px;
    background: #82b5b2;
    /*margin-top: 20px;
    margin-bottom: 10px;*/
}
.doneList{
     600px;
}
.doneList ul{
     600px;
    margin:auto;
}
.doneList li{
     587px;
    height: 30px;
    padding:0 5px;
    margin:5px 0;
    background: white;
    line-height:30px;
    border-top-left-radius: 5px;
    border-bottom-left-radius: 5px;
    border-left:3px solid #0b423e;
}

/*site foot*/
.siteFoot{
     100%;
    height: 100%;
}
.foot{
     600px;
    height: 30px;
    margin:auto;
    text-align: center;
    line-height: 30px;
}




.content{
     500px;
    height: 27px;
    color: black;
    font-size: 15px;
    background: white;
    line-height:27px;
    border: none;
}
.content:hover{
    border: 1px solid skyblue;
}
.listSpan{
     18px;
    height: 18px;
    border-radius: 50%;
    font-size: 13px;
    font-weight: bold;
    color: black;
    float: right;
    text-align: center;
    line-height: 18px;
    background: #82b5b2;
    margin-top:6px;
}
.listSpan:hover{
    cursor:pointer;
}
.checkBox{
     18px;
    height: 18px;
    margin-top:8px;
}
    View Code

    01.js

    //将数据存储在浏览器localStorage  
// 数据格式： todoList:[{"li":inputContent,"status":true/false}]
// 打开浏览器时，从浏览器中读取数据、显示数据
//触发post时：1、从浏览器读取数据，新增数据，将数据写回浏览器  2、在页面上新增一条内容
//修改数据：1、从浏览器读取数据，修改数据，将数据写回浏览器  页面显示
//删除数据:1、从浏览器读取数据，删除数据，将数据写回浏览器  页面显示
//todo>>>>done:读取数据，修改状态为true，写回浏览器，
//done>>>>todo：读取数据，修改状态为true，写回浏览器，  在todo里面增加一条内容


//清除所有
function clear(){
    localStorage.clear();
    showList();
}
//浏览器页面显示列表
function showList(){
    var todoList = document.getElementById("todoList");
    var doneList = document.getElementById("doneList");
    var todoCount = document.getElementById("todoCount");
    var doneCount = document.getElementById("doneCount");
    var data = localStorage.getItem("todoList");
    var todoList1 = "";
    var doneList1 = "";
    var count1 = 0;
    var count2 = 0;
    if(data!=null){
        data=JSON.parse(data);
        for(var i=data.length-1; i>=0; i--){
            if(data[i].status){
                // console.log(data[i].li);
                doneList1 += "<li id='li-" + i +"'><input class='checkBox' type='checkbox' style='float:left;' checked='checked' onchange='change(" + i + ",true)'>" + 
                "<input class='content' type='text' style='float:left;' id='" + i + "' value=" + data[i].li + " onchange='update(" + i + ")'>" +
                 "<span class='listSpan' style='float:right;' onclick=remove(" +i + ")>" + "-</span></li>";
                count2++;
                
            }else{
                // console.log(data);
                todoList1 += "<li id='li-" + i +"'><input class='checkBox' type='checkbox' style='float:left;' onchange='change(" + i + ",false)'>" + 
            "<input class='content' type='text' style='float:left;' id='" + i + "' value=" + data[i].li +" onchange='update(" + i + ")'>" +
             "<span class='listSpan' style='float:right;' onclick=remove(" +i + ")>" + "-</span></li>";
            count1++;
            // todoCount= Number(todoCount.innerText);
            
            }
        }
        todoList.innerHTML = todoList1;
        doneList.innerHTML = doneList1;
        doneCount.innerText = count2;
        todoCount.innerText = count1;
    }else{
        todoList.innerHTML = "";
        doneList.innerHTML = "";
        todoCount.innerText = 0;
        doneCount.innerText = 0;
    }
}

//change todolist and donelist
function change(id,val){
    var data = loadData();
    if(val){
        var li = document.getElementById("li-"+id);
        var checkbox = li.children[0];
        checkbox.innerHTML = "<input class='checkBox' type='checkbox' style='float:left;' onchange='change(" + id + ",false)'>";
        var doneCount = new Number(document.getElementById("doneCount").innerText);
        doneCount.innerText = doneCount-1;
        data[id].status = false;
        saveData(data);
        showList();
    }else{
        var li = document.getElementById("li-"+id);
        var checkbox = li.children[0];
        checkbox.innerHTML = "<input class='checkBox' type='checkbox' checked='checked' style='float:left;' onchange='change(" + id + ",true)'>";
        var todoCount = new Number(document.getElementById("todoCount").innerText);
        todoCount.innerText = todoCount-1;
        data[id].status = true;
        saveData(data);
        showList();
    }
}

//编辑
function update(id){
    var data = loadData();
    var newItem = document.getElementById(new String(id));  //被修改的数据
    console.log(data[id]);
    console.log(newItem);
    data[id].li = newItem.value;
    saveData(data);
}

//删除
function remove(n){
    var data = loadData();
    data.splice(n,1);
    saveData(data);
    showList();
}

//保存数据
function saveData(data){
    data = JSON.stringify(data);
    localStorage.setItem("todoList", data);
    // console.log("sava",JSON.parse(localStorage.getItem("todoList")));
}
//读取数据
function loadData(){    
    var data = localStorage.getItem("todoList");
    var emptyArray = [];
    // console.log(data);
    if(data==null){
        // console.log(2);
        return emptyArray;
    }else {
        // console.log(1);
        return JSON.parse(data);
    }
}

//提交表单
function postaction(){
    // localStorage.clear();
    var inputTodo = document.getElementById("inputTodo");
    if(inputTodo.value == "") {
        alert("内容不能为空");
    }else{
        //读取数据
        var data=loadData();
        // console.log(data);
        // console.log(typeof data);
        var todo={"li":inputTodo.value,"status":false};
        //新增
        data.push(todo);
        // console.log("push", data);
        // 保存
        saveData(data);
        var form=document.getElementById("form");
        form.reset();
        //页面新增数据
        showList();
    }
}
window.onload = function(){
    showList();
}
    View Code

    效果：
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  • 原文地址：https://www.cnblogs.com/yanlin-10/p/9310193.html
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