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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<title>mini-vue</title>
<style>
p {
cursor: pointer;
}
</style>
</head>
<body>
<div id="app">
<h1>HelloWorld</h1>
<div>
<comp :counter="counter" @add="addCounter"></comp>
<p>{{doubleCounter}}</p>
<button @click="addCounter">ADD</button>
<input type="text" v-model="counter" />
</div>
</div>
<script type="module">
import Vue from './dist/vue.min.js';
Vue.component('comp', {
inject: ['msg'],
props: {
counter: {
default: 0
}
},
template: `
<div>
<p>{{msg}}</p>
<p @click="addCounter">{{counter}}</p>
</div>
`,
beforeCreate() {
console.log('Component beforeCreate');
},
created() {
console.log('Component created');
},
beforeMount() {
console.log('Component beforeMount');
},
mounted() {
console.log('Component mount');
},
methods: {
addCounter() {
this.$emit('add');
}
}
});
// 初始化Vue
const app = new Vue({
el: '#app',
provide() {
return {
msg: 'Provide Msg'
};
},
data() {
return {
counter: 1
};
},
computed: {
doubleCounter() {
return this.counter * 2;
}
},
beforeCreate() {
console.log('beforeCreate');
},
created() {
console.log('created');
},
beforeMount() {
console.log('beforeMount');
},
mounted() {
console.log('mount');
},
watch: {
counter(newVal, oldVal) {
console.log(`watch: newVal = ${newVal}, oldVal = ${oldVal}`);
}
},
methods: {
addCounter() {
this.counter++;
}
}
});
</script>
</body>
</html>