Composition API 纯函数式
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
</head>
<body>
<div id="app"></div>
<script src="vue.global.js"></script>
<script>
// Composition API
const App = {
setup () {
let state = Vue.reactive({name: ‘wyq‘, age: 18});
const other = function () {
console.log(‘111‘);
state.name = ‘点击了‘
};
Vue.onMounted(() => {
console.log(‘dom加载完了‘)
});
Vue.effect(() => {
console.log(state.name)
})
return {
state,
other
}
},
template: `<div @click="other">{{state.name}}</div>`,
}
Vue.createApp().mount(App, app)
</script>
</body>
</html>
ts实现类型推断 函数式编程 响应式才是核心
Vue3.0基于Proxy 实现的数据更变检测 支持Composition API和Options API，以及typings