vue组件化

全局组件

<!DOCTYPE html>
<html>
<head>
    <title>vue</title>
    <!-- <script src="./vue.js"></script> -->
    <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script>
</head>
<body>
    <div id="root">
        <input v-model="inputValue"/>
        <button @click="addTextFunc">提交</button>
        <ul>
            <todo-item v-bind:content="item" v-for="item in list"></todo-item>
        </ul>
    </div>
    <script>
        //全局组件
        Vue.component("TodoItem", {
            props: ["content"],
            template: "<li>{{content}}</li>"
        })
        var app = new Vue({
            el: "#root",
            data: {
                list: []
            },
            methods: {
                addTextFunc: function() {
                    this.list.push(this.inputValue)
                    this.inputValue = ""
                }
            }
        });
    </script>
</body>
</html>

局部组件

<!DOCTYPE html>
<html>
<head>
    <title>vue</title>
    <!-- <script src="./vue.js"></script> -->
    <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script>
</head>
<body>
    <div id="root">
        <input v-model="inputValue"/>
        <button @click="addTextFunc">提交</button>
        <ul>
            <todo-item v-bind:content="item" v-for="item in list"></todo-item>
        </ul>
    </div>
    <script>
        //局部组件
        var TodoItem = {
            props: ['content'],
            template: "<li>{{content}}</li>"
        }
        var app = new Vue({
            el: "#root",
            //注册TodoItem组件
            components: {
                TodoItem: TodoItem //命名叫TodoItem，在实例中也叫TodoItem
            },
            data: {
                list: []
            },
            methods: {
                addTextFunc: function() {
                    this.list.push(this.inputValue)
                    this.inputValue = ""
                }
            }
        });
    </script>
</body>
</html>

子组件、父组件双向传递数据

<!DOCTYPE html>
<html>
<head>
    <title>vue</title>
    <script src="./vue.js"></script>
    <!-- <script src="http://cdn.staticfile.org/vue/2.6.10/vue.common.dev.js"></script> -->
</head>
<body>
    <div id="root">
        <input v-model="inputValue"/>
        <button @click="addTextFunc">提交</button>
        <ul>
            "v-bind:"可以简写为":"
            <todo-item v-bind:content="item" v-bind:index="index" v-for="(item, index) in list" @delete="handleItemDelete"></todo-item>
        </ul>
    </div>
    <script>
        //局部组件
        var TodoItem = {
            props: ['content', 'index'], //要使用就要声明(父组件给子组件传值，子组件要接收！)
            //v-on:click的简写:@click
            template: "<li @click='handleItemClick'>{{content}}</li>",
            methods: {
                handleItemClick() {
                    //子组件向父组件传值(触发事件，父组件的@delete="handleItemDelete"在监听)
                    this.$emit("delete", this.index); //不但触发delete时间，同时还把this.index作为参数给父组件
                }
            }
        }
        var app = new Vue({
            el: "#root",
            //注册TodoItem组件
            components: {
                TodoItem: TodoItem //命名叫TodoItem，在实例中也叫TodoItem
            },
            data: {
                list: []
            },
            methods: {
                addTextFunc: function() {
                    this.list.push(this.inputValue)
                    this.inputValue = ""
                },
                handleItemDelete: function(index) { //此处接收传过来的this.index
                    //全部删除
                    //this.list = []
                    //删除点击的数据（标识为当前数据的index）
                    this.list.splice(index, 1)
                }
            }
        });
    </script>
</body>
</html>

猜你喜欢