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First contact with the magical front-end framework vue.js

高洛峰Original: 2016-12-03 10:11:361728browse

Foreword

Start with vue.js, one of the most popular front-end frameworks in 2016. I probably found some information on the Internet and looked at vue.js. Judging from the information on the Internet, I can only marvel at its rapid development. What surprised me is that the work is so popular given that its author is Chinese. Various combinations of blogs and tutorials online. So much so that I felt a little out. Various vue+webpack, vue+react, vue+es6+npm, etc. A dazzling array of items. It’s really impossible to catch up with Liu Shaoqi if he doesn’t study for three days.

The beginning is mainly about getting to know vue.js for the first time, including v-model, v-if, v-else, v-show, v-for ($index and $key are discarded in 2.0, and the index attribute syntax in 2.0 is v -for="(person,index) in persons"), v-on.

Look at the picture

First contact with the magical front-end framework vue.js

Look at the code

<!DOCTYPE html>
<html>
 
<head>
 <meta charset="UTF-8">
 <title>Vue.js CURD</title>
 <meta id="viewport" name="viewport" content="width=device-width,minimum-scale=1,maximum-scale=1">
 <link rel="stylesheet" href="http://cdn.bootcss.com/bootstrap/3.3.0/css/bootstrap.min.css">
 <script src="https://unpkg.com/vue/dist/vue.js"></script>
</head>
 
<body>
 <div class="row" id="app">
 <div class="col-xs-12 col-md-8">
 <fieldset>
 <legend>New Person</legend>
 <div class="form-group">
 <label>ID</label>
 <input type="text" v-model="newPerson.id"/>
 </div>
 <div class="form-group">
 <label>Name:</label>
 <input type="text" v-model="newPerson.name"/>
 </div>
 <div class="form-group">
 <label>Age:</label>
 <input type="text" v-model="newPerson.age"/>
 </div>
 <div class="form-group">
 <label>Sex:</label>
 <select v-model="newPerson.sex">
 <option value="Male">Male</option>
 <option value="Female">Female</option>
 </select>
 </div>
 <div class="form-group">
 <label></label>
 <button @click="createorupdate">ok</button>
 </div>
 </fieldset>
 </div>
 <div class="col-xs-12 col-md-8">
 <table class="table table-striped">
 <thead>
 <tr>
 <th>Id</th>
 <th>name</th>
 <th>age</th>
 <th>sex</th>
 </tr>
 </thead>
 <tbody>
 <tr v-for="(person,index) in persons">
 <td>{{person.id}}</td>
 <td>{{person.name}}</td>
 <td>{{person.age}}</td>
 <td>{{person.sex}}</td>
 <td><button @click="deletePerson(index)">delete</button></td>
 <td><button @click="update(index)">update</button></td>
 </tr>
 </tbody>
 </table>
 </div>
 
 </div>
 <script>
 
 Array.prototype.arrIndex=function(obj){
 for(let i=0;i<this.length;i++){
 var tmp=this[i];
 if(tmp==obj){
 return i;
 }
 }
 }
 
 var vm=new Vue({
 el:&#39;#app&#39;,
 data:{
 editLock:1,
 newPerson:{
 id:0,
 name:&#39;&#39;,
 age:0,
 sex:&#39;male&#39;
 },
 persons:[{
 id:1,
 name: &#39;Jack&#39;,
 age: 30,
 sex: &#39;Male&#39;
 }, {
 id:2,
 name: &#39;Bill&#39;,
 age: 26,
 sex: &#39;Male&#39;
 }, {
 id:3,
 name: &#39;Tracy&#39;,
 age: 22,
 sex: &#39;Female&#39;
 }, {
 id:4,
 name: &#39;Chris&#39;,
 age: 36,
 sex: &#39;Male&#39;
 }]
 },
 methods:{
 create:function(){
 this.persons.push(this.newPerson);
 this.newPerson={id:0,name:&#39;&#39;,age:0,sex:&#39;male&#39;};
 },
 createorupdate:function(){
 if(this.editLock===1){
 this.persons.push(this.newPerson);
 }else{
 //删除老对象
 var aindex=this.persons.arrIndex(this.newPerson);
 console.log(aindex);
 this.persons.splice(aindex,1);
 //插入新对象
 this.persons.push(this.newPerson);
 }
 
 this.newPerson={id:0,name:&#39;&#39;,age:0,sex:&#39;male&#39;};
 },
 deletePerson:function(idx){
 this.persons.splice(idx,1);
 
 },
 update:function(idx){
 var p =this.persons[idx];
 this.editLock=0;
 this.newPerson=p;
 }
 
 }
 })
 </script>
</body>
 
</html>

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