<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8"/>
<script src="vue.js"></script>
</head>
<body>
<div>
<h1>--選項(xiàng)合并--</h1>
<script>
//當(dāng)組件和混入對(duì)象含有同名選項(xiàng)時(shí)，這些選項(xiàng)將以恰當(dāng)?shù)姆绞竭M(jìn)行“合并”。
//比如，數(shù)據(jù)對(duì)象在內(nèi)部會(huì)進(jìn)行遞歸合并，并在發(fā)生沖突時(shí)以組件數(shù)據(jù)優(yōu)先。
var mixin = {
data: function () {
return {
message: 'hello',
foo: 'abc'
}
}
}
new Vue({
mixins: [mixin],
data: function () {
return {
message: 'goodbye',
bar: 'def'
}
},
created: function () {
console.log(this.$data)
}
})
</script>
<script>
//同名鉤子函數(shù)將合并為一個(gè)數(shù)組，因此都將被調(diào)用。
//另外，混入對(duì)象的鉤子將在組件自身鉤子之前調(diào)用。
var mixin = {
created: function () {
console.log('混入對(duì)象的鉤子被調(diào)用')
}
}
new Vue({
mixins: [mixin],
created: function () {
console.log('組件鉤子被調(diào)用')
}
})
// => "混入對(duì)象的鉤子被調(diào)用"
// => "組件鉤子被調(diào)用"
</script>
<script>
//值為對(duì)象的選項(xiàng)，例如 methods、components 和 directives，
//將被合并為同一個(gè)對(duì)象。兩個(gè)對(duì)象鍵名沖突時(shí)，取組件對(duì)象的鍵值對(duì)。
//注意：Vue.extend() 也使用同樣的策略進(jìn)行合并。
var mixin = {
methods: {
foo: function () {
console.log('foo')
},
conflicting: function () {
console.log('from mixin')
}
}
}
var vm = new Vue({
mixins: [mixin],
methods: {
bar: function () {
console.log('bar')
},
conflicting: function () {
console.log('from self')
}
}
})
vm.foo() // => "foo"
vm.bar() // => "bar"
vm.conflicting() // => "from self"
</script>
<h1>--全局混入--</h1>
<script>
Vue.mixin({
created: function () {
var myOption = this.$options.myOption
if (myOption) {
console.log(myOption)
}
}
})
new Vue({
myOption: 'hello!'
})
</script>
</div>
</body>
</html>
