vue2补充内容
父传子
$attrs传值
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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
<parent :msg="msg" hello="hello" color="color"></parent>
</div>
<script src="./lib/vue.js"></script>
<script>
let child = {
template: `
<div>子组件</div>
`,
props: {
hello: {
}
},
created() {
console.log(this.$attrs)
},
}
let parent = {
template: `
<div>父组件<child v-bind="$attrs"></child></div>
`,
components: {
child
}
}
new Vue({
el: "#app",
data: {
msg: 'hello'
},
components: {
parent
}
})
</script>
</body>
</html>
|
字传父
$listener传事件
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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
<parent @click="handler"></parent>
</div>
<script src="./lib/vue.js"></script>
<script>
Vue.config.productionTip = false
let child = {
template: `
<div>子组件<button @click="handler">传值</button></div>
`,
methods: {
handler() {
this.$emit('click', '传递的数据')
}
},
created() {
console.log(this.$listeners)
},
}
let parent = {
template: `
<div>父组件<child v-on="$listeners"></child></div>
`,
components: {
child
},
created(){
console.log(this.$listeners)
}
}
new Vue({
el: "#app",
data: {
msg: 'hello'
},
components: {
parent
},
methods:{
handler(v){
console.log(v);
}
}
})
</script>
</body>
</html>
|
混入 mixin
mixin相当于一个公共代码块，它其实也是一个对象，也就是说这个里面的内容是提供给其他组件使用的。
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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
</head>
<body>
<div id="app">
{{msg}}
</div>
<script src="./lib/vue.js"></script>
<script>
Vue.config.productionTip = false
//mixin的内容设计和组件中的内容设计基本一致
let public_mixin = {
data() {
return {
msg: 'hello'
}
},
//方法
methods: {
sayhello() {
console.log('hello')
}
},
//计算属性
computed: {
sum() {
return 1 + 0
}
},
//钩子函数
created() {
console.log('hello Vue is created！')
},
//监听
watch: {
msg() {
console.log('msg changed')
}
}
}
// 全局混入mixin
// Vue.mixin(public_mixin)//data中数据名冲突时，vue实例的data优先级更高
new Vue({
el: "#app",
data: {
message:'hello'
},
// 局部混入mixin
mixins:[public_mixin]
})
</script>
</body>
</html>
|
devserver配置
项目相关命令
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| npm run serve 运行项目
npm run dev 启动开发服务
npm run lint 运行eslint检索格式化
npm run build 打包
|
