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                >[warning]利用input事件, 實現偽雙向數據綁定 1. 數據的流向 model <-> controller <-> view ![](https://box.kancloud.cn/047121cebdc3ad23ec1c36bf28464487_783x382.png) 2. 乍看一下, 以為我們實現了雙向數據綁定, 不過在控制臺修改model值的時候, 是無法更新view的 3. 代碼如下: ~~~ <div> <p>你的年齡現在: <input id="result" oninput="changeAge(event)"/></p> </div> <script> let model = { age: 18 }; document.getElementById("result").value = model.age; function changeAge(ev){ model.age = ev.target.value; console.log(model.age); } // 但是發現, 打開網頁, 在控制臺修改model.age的值, 無法更新頁面, 所以還沒有達到雙向綁定的目的 </script> ~~~
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