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  • vue25---vue2.0变化

    组件模版:

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>智能社——http://www.zhinengshe.com</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">
        <style>
    
        </style>
        <script src="vue.js"></script>
        <script>
            window.onload=function(){
                new Vue({
                    el:'#box',
                    data:{
                        msg:'welcome vue2.0'
                    }
                });
            };
        </script>
    </head>
    <body>
        <div id="box">
            {{msg}}
        </div>
    </body>
    </html>
    
    
    
    
    
    
    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>智能社——http://www.zhinengshe.com</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">
        <style>
    
        </style>
        <script src="vue1.0.js"></script>
        <script>
            Vue.component('my-aaa',{//组件这种写法
                template:'<h3>我是组件</h3><strong>我是加粗标签</strong>'
            });
    
            window.onload=function(){
                new Vue({
                    el:'#box',
                    data:{
                        msg:'welcome vue2.0'
                    }
                });
            };
        </script>
    </head>
    <body>
        <div id="box">
            <my-aaa></my-aaa>
            {{msg}}
        </div>
    </body>
    </html>
    
    
    
    
    
    
    
    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>智能社——http://www.zhinengshe.com</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">
        <style>
    
        </style>
        <script src="vue.js"></script>
        <script>
            Vue.component('my-aaa',{//全局
                template:'#aaa'
            });
    
            window.onload=function(){
                new Vue({
                    el:'#box',
                    data:{
                        msg:'welcome vue2.0'
                    }
                });
            };
        </script>
    </head>
    <body>
        <template id="aaa">
            <div>
                <h3>我是组件</h3>
                <strong>我是加粗标签</strong>
            </div>
        </template>
        <div id="box">
            <my-aaa></my-aaa>
            {{msg}}
        </div>
    </body>
    </html>

    组件定义方式

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>智能社——http://www.zhinengshe.com</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">
        <style>
    
        </style>
        <script src="vue.js"></script>
        <script>
            var Home={  //这是2.0组件
                template:'#aaa'
            };  //Vue.extend()
    
            Vue.component('my-aaa',Home);//全局
    
    
            window.onload=function(){
                new Vue({
                    el:'#box',
                    data:{
                        msg:'welcome vue2.0'
                    }
                });
            };
        </script>
    </head>
    <body>
        <template id="aaa">
            <div>
                <h3>我是组件</h3>
                <strong>我是加粗标签</strong>
            </div>
        </template>
        <div id="box">
            <my-aaa></my-aaa>
            {{msg}}
        </div>
    </body>
    </html>
    
    
    
    
    
    
    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>智能社——http://www.zhinengshe.com</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">
        <style>
    
        </style>
        <script src="vue.js"></script>
        <script>
            var Home={  //这是2.0组件
                template:'#aaa'
            };  //Vue.extend()
    
    
    
            window.onload=function(){
                new Vue({
                    el:'#box',
                    data:{
                        msg:'welcome vue2.0'
                    },
                    components:{//局部
                        'aaa':Home
                    }
                });
            };
        </script>
    </head>
    <body>
        <template id="aaa">
            <div>
                <h3>我是组件</h3>
                <strong>我是加粗标签</strong>
            </div>
        </template>
        <div id="box">
            <aaa></aaa>
            {{msg}}
        </div>
    </body>
    </html>

    声明周期

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta charset="UTF-8">
        <title>智能社——http://www.zhinengshe.com</title>
        <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=0">
        <meta name="apple-mobile-web-app-capable" content="yes">
        <meta name="apple-mobile-web-app-status-bar-style" content="black">
        <style>
    
        </style>
        <script src="vue.js"></script>
        <script>
    
            window.onload=function(){
                new Vue({
                    el:'#box',
                    data:{
                        msg:'welcome vue2.0'
                    },
                    methods:{
                        update(){
                            this.msg='大家好';
                        },
                        destroy(){
                            this.$destroy();//this是new Vue对象
                        }
                    },
                    beforeCreate(){
                        console.log('组件实例刚刚被创建');
                    },
                    created(){
                        console.log('实例已经创建完成');
                    },
                    beforeMount(){
                        console.log('模板编译之前');
                    },
                    mounted(){
                        console.log('模板编译完成');
                    },
                    beforeUpdate(){
                        console.log('组件更新之前');
                    },
                    updated(){
                        console.log('组件更新完毕');
                    },
                    beforeDestroy(){
                        console.log('组件销毁之前');
                    },
                    destroyed(){
                        console.log('组件销毁之后');
                    }
                });
            };
        </script>
    </head>
    <body>
        <div id="box">
            <input type="button" value="更新数据" @click="update">
            <input type="button" value="销毁组件" @click="destroy">
            {{msg}}
        </div>
    </body>
    </html>
    vue2.0:
        bower info vue
    
        http://vuejs.org/
    到了2.0以后,有哪些变化?
    
    1. 在每个组件模板,不在支持片段代码
        组件中模板:
            之前:
                <template>
                    <h3>我是组件</h3><strong>我是加粗标签</strong>
                </template>
            现在:  必须有根元素,包裹住所有的代码
                <template id="aaa">
                        <div>
                            <h3>我是组件</h3>
                            <strong>我是加粗标签</strong>
                        </div>
                </template>
                
    2. 关于组件定义
        Vue.extend    这种方式,在2.0里面有,但是有一些改动,这种写法,即使能用,咱也不用——--------废弃
        
        Vue.component(组件名称,{    在2.0继续能用
            data(){}
            methods:{}
            template:
        });
    
        2.0推出一个组件,简洁定义方式:
        var Home={
            template:''        ->   Vue.extend()
        };
        
    3. 生命周期
        之前:
            init    
            created
            beforeCompile
            compiled
            ready        √    ->     mounted
            beforeDestroy    
            destroyed
        现在:    (创建----编译-----更新------销毁)
            beforeCreate    组件实例刚刚被创建,属性都没有
            created    实例已经创建完成,属性已经绑定
            beforeMount    模板编译之前
            mounted    模板编译之后,代替之前ready  *
            beforeUpdate    组件更新之前
            updated    组件更新完毕    *
            beforeDestroy    组件销毁前
            destroyed    组件销毁后
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  • 原文地址:https://www.cnblogs.com/yaowen/p/6985679.html
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