回答編集履歴
2
調整
answer
CHANGED
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@@ -30,4 +30,11 @@
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30
30
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mo.observe(document.body, opt);
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31
31
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});
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32
32
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</script>
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33
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+
```
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34
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+
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35
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+
ちなみにArray.fromにこだわりがなければこうした方がわかりやすいと思います
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36
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```javascript
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37
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const mo = new MutationObserver(function(r){
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38
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console.log([...r].map(x=>[...x.addedNodes].filter(y=>y instanceof HTMLElement)[0].id));
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39
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});
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33
40
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```
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1
chousei
answer
CHANGED
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@@ -1,1 +1,33 @@
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1
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-
追加されたことを感知したいならMutationObserverInitをご利用ください
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1
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+
追加されたことを感知したいならMutationObserverInitをご利用ください
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2
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+
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3
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# sample
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4
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```javascript
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5
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<script>
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6
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const loop=5;
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7
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const max=10;
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8
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let count=0;
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9
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let timerId;
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10
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let j=0;
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11
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window.addEventListener('DOMContentLoaded', ()=>{
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12
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timerId=setInterval(()=>{
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13
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for(let i=0;i<max;i++){
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14
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div = document.createElement('div');
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15
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div.id="div"+(i+j);
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16
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div.style.width = "200px";
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17
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div.style.height = "30px";
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18
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div.style.background="red";
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19
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document.body.appendChild(div);
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20
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}
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21
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j+=max;
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22
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if(++count>=loop) clearInterval(timerId);
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23
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},1000);
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24
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const mo = new MutationObserver(function(r){
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25
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Array.from(r,x=>console.log([...x.addedNodes].filter(y=>y instanceof HTMLElement)[0].id));
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26
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});
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27
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const opt = {
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28
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childList:true,
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29
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};
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30
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mo.observe(document.body, opt);
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31
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});
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32
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</script>
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33
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```
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