mvvm/reactivity/index.html at vue3 · DMQ/mvvm · GitHub

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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>Reactivity</title>
</head>
<body>
    <script src="./reactive.js"></script>
    <script src="./ref.js"></script>
    <script src="./effect.js"></script>
    <script src="./computed.js"></script>
    <script src="./watch.js"></script>
    <script>
        const count = ref(0);
        const data = reactive({});

        effect(() => {
            console.log('count changed:', count.value);
        });

        const cName = computed(() => `computed count: ${data.name}`);

        watch(() => data.age, (newVal, oldVal) => {
            console.log(`age changed: ${oldVal} -> ${newVal}`);
        });

        // 打开浏览器在console分别执行以下代码，看打印的日志
        // count.value = 1;
        // console.log(cName.value);
        // data.name = 'word';
        // console.log(cName.value);
    </script>
</body>
</html>