回答編集履歴
1
ちょうせい
test
CHANGED
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@@ -20,3 +20,29 @@
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20
20
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test.value="test3";
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21
21
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</script>
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22
22
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```
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23
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+
# 調整版
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24
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```javascript
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25
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<input type="text" id="test" value="test1" />
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26
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<script>
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27
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const test= document.getElementById('test');
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28
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let value=test.getAttribute('value');
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29
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test.addEventListener('input', () => {
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30
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console.log("testが変更されたときの処理");
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31
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});
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32
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Object.defineProperty(test, "value", {
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33
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get: () => value,
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34
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set: newValue => {
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35
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const oldValue = value;
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36
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value = newValue;
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37
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test.dispatchEvent(new Event('input'));
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38
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test.setAttribute('value',newValue);
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39
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console.log(`${oldValue}→${value}`);
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40
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},
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41
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});
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42
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let count=1;
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43
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let timerId=setInterval(()=>{
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44
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test.value=`test${++count}`;
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45
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if(count>5) clearInterval(timerId);
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46
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},1000);
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47
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</script>
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48
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```
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