todoList

页面预览

HTML

<div class="main"> 
     <div class="header">
         <div class="logo">todoList</div>
         <input type="text" placeholder="请输入..." id="input"/>
     </div>
     <div class="doing todo">
         <h3>
             <span class="title">正在进行</span>
             <span class="num"></span>
         </h3>
         <div class="list">
             <!--<div class="todoItem">-->
                 <!--<input type="checkbox">-->
                 <!--<div class="content">内容</div>-->
                 <!--<div class="del">删除</div>-->
             <!--</div>-->
         </div>
     </div>
     <div class="done todo">
         <h3>
             <span class="title">已经完成</span>
             <span class="num" ></span>
         </h3>
         <div class="list">
             <!--<div class="todoItem">-->
                 <!--<input type="checkbox">-->
                 <!--<div class="content">内容</div>-->
                 <!--<div class="del">删除</div>-->
             <!--</div>-->
         </div>
     </div>
 </div>

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CSS

*{
    margin: 0;
    padding: 0;
    -webkit-box-sizing: border-box;
    -moz-box-sizing: border-box;
    box-sizing: border-box;
}
body{
    background-color: #cccccc;
    font-size: 16px;
}
.main{
    width: 3.75rem;

}
.header{
    width: 3.75rem;
    height: 0.5rem;
    background-color: #87ceeb;
    display: flex;
    justify-content: space-between;
    align-items: center;

}
.header> .logo{
    width: 1.2rem;
    height: 0.5rem;
    font-weight: bold;
    text-align: center;
    line-height: 0.5rem;
    font-size: 0.25rem;
}
.header> input{
    height: 0.3rem;
    width: 2.5rem;
    margin: 0 0.2rem;
    border-radius: 0.05rem;
    border: none;
    outline: none;
    padding: 0 0.1rem;
}
.todo h3{
    height: 0.6rem;
    line-height: 0.6rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 0.15rem;
}
.todo .list{
    padding: 0 0.15rem;
}
.todo .todoItem{
    display: flex;
    height: 0.38rem;
    line-height: 0.38rem;
    align-items: center;
    background: #888888;
    border-radius: 0.05rem;
    overflow: hidden;
    margin-bottom: 0.1rem;
}
.todo .todoItem:before{
    width: 0.04rem;
    height: 0.38rem;
    background: #00B7FF;
    content: "";

}
.todo .todoItem>input{
    width: 0.2rem;
    height: 0.2rem;
    margin: 0 0.2rem;
}
.todo .todoItem .content{
    width: 2.6rem;
}
.todo .todoItem .del{
    background: #ff6700;
    width: 0.4rem;
    height: 0.2rem;
    font-size: 0.12rem;
    line-height: 0.2rem;
    text-align: center;
    border-radius: 0.05rem;
    color: #cccccc;
}
.done.todo .todoItem{
    opacity: 0.3;
}
.pc .main{
    width: 600px;
}
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JavaScript

初始化定义

var doingListDiv = document.querySelector(".doing .list");  //正在进行的内容部分
var doneListDiv = document.querySelector(".done .list");	//已经完成的内容
var mainDiv = document.querySelector(".main");		//为了统一控制删除模块
var doingnumDiv = document.querySelector(".doing .num");	//正在进行的内容个数
var donenumDiv = document.querySelector(".done .num");		//已经完成的内容个数
if (localStorage.todoList == undefined){		//如果本地内存没有数据
    var todoList = [];				//初始化todoList
}else {
    var todoList = JSON.parse(localStorage.todoList);		//字符串转换为对象
}
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获取输入对象，并将其内容添加到todoList

var inputDom = document.querySelector("#input");		//获取输入对象
//监听输入
inputDom.onkeydown = function (event) {
    //当按下回车，获取输入框内容，生成未完成列表
    if (event.key == 'Enter'){
        var value = inputDom.value;		//将获取的对象存为value
        var objList = {			//创建对象存数据
            content:value,
            isDone: false			//默认：正在进行
        };
        todoList.push(objList);	//将获取的输入对象传入todoList
        render(todoList);			//渲染
    }
}
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渲染

function render(todoList){
    localStorage.todoList = JSON.stringify(todoList);	//将对象转换为JSON 字符串
    //每次渲染要将其置为“”，避免重复传值
    doingListDiv.innerHTML = '';
    doneListDiv.innerHTML = '';
    todoList.forEach(function (item,index) {	//对于todoList的每一项进行渲染
        var todoItem = document.createElement('div');	//为每一个传入内容创建Item
        todoItem.className = "todoItem";
        if (item.isDone){		//判断属于正在进行还是完成
            todoItem.innerHTML =		//插入Item，其中变量每一项的内容
                `<input type="checkbox" checked="checked" data-index="${index}">
                 <div class="content">`+
                item.content+`</div>
                <div class="del">删除</div>`;
            doneListDiv.appendChild(todoItem);
        }
        else {
            todoItem.innerHTML =
                `<input type="checkbox" data-index="${index}">
                <div class="content">`+
                item.content+`</div>
                <div class="del">删除</div>`;
            doingListDiv.appendChild(todoItem);
        }
    })
    //得到正在进行的内容数量
    var doingnum = document.querySelectorAll(".doing .todoItem").length;
    console.log(doingnum);
    doingnumDiv.innerHTML = doingnum;
    //得到已经完成的内容数量
    var donenum = document.querySelectorAll(".done .todoItem").length;
    console.log(donenum);
    donenumDiv.innerHTML = donenum;
}
render(todoList);	//从本地存储获取数据的渲染
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事件

 doingListDiv.onchange = function(e){				//事件触发
     var index = parseInt(e.target.dataset.index);		//获取当前选中的index
     todoList[index].isDone = true;				//通过改变isDone的值来渲染
     render(todoList);
 }
 doneListDiv.onchange = function(e){				//事件触发
     var index = parseInt(e.target.dataset.index);		//获取当前选中的index
     todoList[index].isDone = false;			//通过改变isDone的值来渲染
     render(todoList);
 }
 mainDiv.onclick = function(e){			//点击删除事件
     if (e.target.className == 'del'){
         var index = parseInt(e.target.dataset.index);
         todoList.splice(index,1);				//数组删除
         render(todoList);
     }
 }
``’
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