1、store.js(读取写入到localstorage)
const STORAGE_KEY="todos-vuejs"
export default{
fetch(){
return JSON.parse(window.localStorage.getItem(
STORAGE_KEY||"[]"))
},
save(items){
window.localStorage.setItem(STORAGE_KEY,JSON.stringify(items))
}
}
2、App.vue
<template>
<div id="app">
<h1>{{title}}</h1>
<h1 v-text="title"></h1>
<h1 v-html="title"></h1>
<input type="text" v-model="newItem" v-on:keyup.enter="addNew">
<ul>
<li v-for="item in items" v-bind:class="{finished:item.isFinished}" v-on:click="toggleFinish(item)">
{{item.label}}
</li>
</ul> </div>
</template> <script>
import Store from './Store'
//console.log(Store)
export default { data () {
return {
title: '<span>?</span>this is a todolist',
items:Store.fetch(),
// items:[
// {
// label:'coding',
// isFinished:false // },
// {
// label:'walking',
// isFinished:true // }
// ],
newItem:''
}
},
watch:{
items:{
handler:function(items){
// console.log(val,oldVal)
// console.log(items); Store.save(items);
// console.log(items); }
},
deep:true//也检测items内部的key的变化
},
methods:{
toggleFinish:function(item){
// console.log(item);
item.isFinished=!item.isFinished;
console.log(this.items);
},
addNew:function(){
// this.newItem;
// console.log(this.newItem);
this.items.push({
label:this.newItem,
isFinished:false
})
this.newItem='';
}
}
}
</script> <style>
.finished{
text-decoration:underline;
}
#app {
font-family: 'Avenir', Helvetica, Arial, sans-serif;
-webkit-font-smoothing: antialiased;
-moz-osx-font-smoothing: grayscale;
text-align: center;
color: #2c3e50;
margin-top: 60px;
}
</style>