[問題]用D3.js載入的時間資料如何做判斷?
自己也是剛接觸JS沒多久,對於JS語法還不熟悉,不知道版上有沒有會D3的人,
我自己寫了兩個網頁,一個u21.html,一個u23.html,u23用jquery將選擇的選項
傳到u21裡,而u21裡的D3根據選項將對應的CSV檔載入後,依照key值將資料做堆疊,
再來就是我不會做判斷的地方,我該如何判斷資料裡的日期是否一樣 ? 若一樣,
就將資料裡的數量加起來後,留下一筆資料,例:
date birdName count
1999/10/01 XXX 2
1999/10/08 XXX 3
1999/10/01 XXX 4
變成
date birdName count
1999/10/01 XXX 6
1999/10/08 XXX 3
請版上的強者指導一下
附上
u21:https://goo.gl/Wuhk6q
u23:https://goo.gl/2R6uFx
相對應CSV:1.https://goo.gl/sKMvu5
2.https://goo.gl/AlIw8k
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