说明
【Vue 开发实战】学习笔记。
插槽
Vue 实现了一套内容分发的 API，这套 API 的设计灵感源自 Web Components 规范草案，将 <slot> 元素作为承载分发内容的出口。
匿名插槽
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Vue组件的核心概念：插槽</title>
</head>
<body>
<div id="app">
{{message}}
<todo-list>
<todo-item v-for="item in list" :title="item.title" :del="item.del" @delete="handleDelete"></todo-item>
</todo-list>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>// 定义一个名为 todo-item 的组件；名字需要唯一
Vue.component("todo-item", {
props: {
title: String,
del: {
type: Boolean,
default: false
}
},
template: `
<li>
<span v-if="!del">{{title}}</span>
<span v-else style="text-decoration: line-through;">{{title}}</span>
<button v-show="del" @click="handleClick">删除</button>
</li>
`,
// data 需要为函数返回一个对象，保证唯一性
data: function() {
return {}
},
methods: {
handleClick() {
console.log('点击了删除按钮');
// 发射时间出去
this.$emit("delete", this.title);
}
},
});
// 定义一个名为 todo-list 的组件
Vue.component("todo-list", {
template: `
<ul><slot></slot></ul>
`,
});
var vm = new Vue({
el: "#app",
data: {
message: "kaimo 313",
list: [
{
title: "课程1",
del: true
},{
title: "课程2",
del: false
},
]
},
methods: {
handleDelete(val) {
console.log('handleDelete---->', val);
}
}
})</script>
</body>
</html>
具名插槽
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Vue组件的核心概念：插槽</title>
</head>
<body>
<div id="app">
{{message}}
<todo-list>
<todo-item v-for="item in list" :title="item.title" :del="item.del" @delete="handleDelete">
<span slot="pre-icon">前置icon</span>
<!-- 新语法 v-slot -->
<template v-slot:suf-icon>后置icon</template>
</todo-item>
</todo-list>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>// 定义一个名为 todo-item 的组件；名字需要唯一
Vue.component("todo-item", {
props: {
title: String,
del: {
type: Boolean,
default: false
}
},
template: `
<li>
<slot name="pre-icon"></slot>
<span v-if="!del">{{title}}</span>
<span v-else style="text-decoration: line-through;">{{title}}</span>
<slot name="suf-icon">没有使用，默认文字展示</slot>
<button v-show="del" @click="handleClick">删除</button>
</li>
`,
// data 需要为函数返回一个对象，保证唯一性
data: function() {
return {}
},
methods: {
handleClick() {
console.log('点击了删除按钮');
// 发射时间出去
this.$emit("delete", this.title);
}
},
});
// 定义一个名为 todo-list 的组件
Vue.component("todo-list", {
template: `
<ul><slot></slot></ul>
`,
});
var vm = new Vue({
el: "#app",
data: {
message: "kaimo 313",
list: [
{
title: "课程1",
del: true
},{
title: "课程2",
del: false
},
]
},
methods: {
handleDelete(val) {
console.log('handleDelete---->', val);
}
}
})</script>
</body>
</html>
不使用后置 icon 插槽
就会展示默认的东西
作用域插槽
接收子组件传递的值，本质上就是传递是返回组件的函数
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Vue组件的核心概念：插槽</title>
</head>
<body>
<div id="app">
{{message}}
<todo-list>
<todo-item v-for="item in list" :title="item.title" :del="item.del" @delete="handleDelete">
<span slot="pre-icon">前置icon</span>
<!-- 新语法 v-slot -->
<template v-slot:suf-icon="{value}">后置icon：{{value}}</template>
</todo-item>
</todo-list>
</div>
<script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
<script>// 定义一个名为 todo-item 的组件；名字需要唯一
Vue.component("todo-item", {
props: {
title: String,
del: {
type: Boolean,
default: false
}
},
template: `
<li>
<slot name="pre-icon"></slot>
<span v-if="!del">{{title}}</span>
<span v-else style="text-decoration: line-through;">{{title}}</span>
<slot name="suf-icon" :value="value">没有使用，默认文字展示</slot>
<button v-show="del" @click="handleClick">删除</button>
</li>
`,
// data 需要为函数返回一个对象，保证唯一性
data: function() {
return {
value: Math.random()
}
},
methods: {
handleClick() {
console.log('点击了删除按钮');
// 发射时间出去
this.$emit("delete", this.title);
}
},
});
// 定义一个名为 todo-list 的组件
Vue.component("todo-list", {
template: `
<ul><slot></slot></ul>
`,
});
var vm = new Vue({
el: "#app",
data: {
message: "kaimo 313",
list: [
{
title: "课程1",
del: true
},{
title: "课程2",
del: false
},
]
},
methods: {
handleDelete(val) {
console.log('handleDelete---->', val);
}
}
})</script>
</body>
</html>
