3. Lifecycle

[zyuan8591]

nextTick

• 呼叫時機：數據更新後，DOM 非同步更新也完成後
• 會回傳 promise
  • 可以把 callback 傳進去
  • 也可以在 async function 裡面 await nextTick() ，等 nextTick() 被呼叫後，再接著處理

    nextTick(() => {
    const messagesDiv = document.querySelector(".messages");
    messagesDiv.scrollTop = messagesDiv.scrollHeight;
    });

    

[zyuan8591]

keepalive lifecycle

activated() {
    console.log('component activated')
},
deactivated() {
    console.log('component deactivated')
},