//1 傳遞給子組件的回調(diào)函數(shù),只要有心得內(nèi)容傳遞過來,就更新當(dāng)前的:list。list只要更新,通過props傳遞給TodoList的data就會(huì)更新,DOM就會(huì)新增一個(gè)選項(xiàng)列表 onAddSubmit(addTitle) { console.log("增加了:" + addTitle) let addItem = { title: addTitle, isFinished: false } this.state.list.unshift(addItem)...
www.dbjr.com.cn/article/1433...htm 2025-6-6