vue笔记

作者: dongshixiao | 来源:发表于2019-05-19 15:13 被阅读0次

工欲善其事必先利其器,首先我们得有一个趁手的ide,一直习惯使用phpstorm,但是Ctrl+Alt+l的格式化实在满足不了ESLint校验我们写的代码!

1.phpstorm配置ESlint检查代码
image.png

Ctrl+ALT+L是phpstorm自带的快速格式化的缩进量,我们需要配置eslint格式化快捷键。如图添加快捷键ALT+L即可,以后就可以用Alt+L格式化成符合eslint规则的格式代码。


image.png

此时使用Alt+L就可以爽歪歪的使用代码格式化了

2.phpstorm在vue文件中使用stylus
image.png

以下插件也可以一并安装


image.png

装完后记得重启!

3.安装vue-cli

安装前记得切换国内源
npm config set registry https://registry.npm.taobao.org

npm i -g cnpm

npm info underscore
// 有 registry.npm.taobao.org 等字样  说明切换成功
接着安装vue-cli

npm i -g @vue/cli@3

4.初始化vue项目

vue init webpack admin

[图片上传中...(image.png-a9f0fd-1561989872025-0)]
按照图片指示操作即可

安装element-ui 
npm i element-ui –S 
安装axios
npm i axios -S
安装 avue
npm i @smallwei/avue -S
使用方式:
import Avue from '@smallwei/avue';
import '@smallwei/avue/lib/index.css';
Vue.use(Avue);
安装js-cookie插件
npm install js-cookie --save
安装vuex
npm install vuex --save

如果出现 Module not found: Error: Can't resolve 'sass-loader'
安装下下面扩展即可

npm install node-sass --save-dev
npm install sass-loader --save-dev

安装vue版本ECharts
npm install vue-echarts --save
使用


基本使用

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <script src="vue.js"></script>
    </head>
    <body>

        <!--
  v-bind:  简写":"  属性操作
  v-on:click 简写 "@"  事件
  v-html  解析变量的标签
  v-model  双向绑定
  -->


        <!-- ID root 称为挂载点 -->
        <div id="root"  v-bind:title="title" @click="rootClick">
            <input type="text" v-model="first"><br>
            <input type="text" v-model="operation"><br>
            <input type="text" v-model="last"><br>
            <div>{{fullName}}</div>
            <div>{{count}}</div>
            <!-- v-if="flag" --> 
            <div v-show="flag" >hhhhhhhh</div>
            <button type="button" @click="btnClick">显示/隐藏</button>
            
            
            <ul>
                <li v-for="(v,k) of list" :key="k">{{v}}</li>
            </ul>
            
        </div>
    </body>
    <script>
        new Vue({
            el: "#root",
            data: {
                first:'',
                last:'',
                operation:'',
                // content: "你好",
                // title: "this is title",
                count: 0,
                flag:true,
                list:[1,2,3,4]
            },
            methods: {
                rootClick: function() {
                    this.content = '世界'
                },
                btnClick:function(){
                    this.flag = !this.flag;
                }
            },
            computed: {
                fullName: function(){
                    return this.first + this.operation + this.last;
                }
            },
            watch:{ //侦听器
                first:function(){
                    this.count++;
                },
                last:function(){
                    this.count++;
                }
            }
        });
    </script>
</html>

子父组件之间的传值

<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>Title</title>
        <script src="vue.js"></script>
    </head>
    <body>
        <div id="root">
            <div>
                <input type="text" v-model="content">
                <button type="button" @click="add">提交</button>
            </div>

            <ul>
                <todo-li v-for="(value,key) of list"
                 :key="key"
                 :index="key"
                 :value="value"
                 @delete-li="deleteLi"
                 >
                </todo-li>
            </ul>

        </div>
    </body>
    <script>
        Vue.component('todo-li', {
            props:['value','index'],
            template: '<li @click="todoDeleteLi">{{value}}</li>',
            methods:{
                todoDeleteLi:function(){
                    this.$emit("delete-li",this.index);
                }
            }
        });

        new Vue({
            el: "#root",
            data: {
                list: [],
                content: '',
            },
            methods: {
                add: function() {
                    this.list.push(this.content);
                    this.content = '';
                },
                deleteLi:function(k){
                    this.list.splice(k,1);
                }
            }
        });
    </script>
</html>

计算属性之 geter,seter

<!DOCTYPE html>
<html>
<head>
    <title></title>
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
</head>
<body>

    <div id="root">

        <div>
            {{fullName}}
        </div>
    
    </div>

</body>

<script >
    var vm = new Vue({
        el:"#root",
        data:{
            firstName:'n',
            lastName:'i'
        },
        computed:{
            /*fullName:function(){
                return this.firstName+''+this.lastName
            }*/
            fullName:{
                get:function(){
                    return this.firstName+this.lastName;
                },
                set:function (value) { //例如: li lei
                    var arr = value.split(" ");
                    this.firstName = arr[0];
                    this.lastName = arr[1];
                }
            }
        }
    }); 
</script>
</html>

样式操作

<!DOCTYPE html>
<html>

<head>
    <title></title>
    <script src="https://unpkg.com/vue/dist/vue.js"></script>
</head>
<style type="text/css">
/*.activated {
    color: yellow;*/
}
</style>

<body>
    <div id="root">
        <div>
            <!-- 1. -->
            <!-- <div @click="divClick":class="{activated:isActivated}"> -->
            <!-- 2. -->
            <!-- <div @click="divClick" :class="[activated]">
                Hello world
            </div> -->

            <div :style="styleObj" @click="divClick">hello</div>


        </div>
    </div>
</body>
<script>
var vm = new Vue({
    el: "#root",
    data: {
        // 1,2
        // activated: "",
        //3.
        styleObj:{
            color:"yellow"
        }
    },
    methods: {
        divClick: function() {
            //1.
            // this.isActivated = !this.isActivated;
            //2.
            //this.activated = this.activated == "activated"?"":"activated"

            //3.
            this.styleObj.color = this.styleObj.color=='yellow'?'red':'yellow';
        }
    }
});
</script>
</html>
vue.png

图片为学习转载,侵删

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