回答編集履歴
2
調整
test
CHANGED
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@@ -40,14 +40,26 @@
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40
40
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41
41
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(async()=>{
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42
42
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43
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-
wait(
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43
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+
await wait(2,"a");
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44
44
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45
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-
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45
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+
wait(4,"b");
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46
46
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47
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+
await wait(2,"c");
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48
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+
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47
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-
await wait(1,"
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49
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+
await wait(1,"d");
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48
50
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49
51
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})();
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50
52
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53
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+
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54
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+
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51
55
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```
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52
56
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57
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+
上記であれば、
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58
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59
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0. 2秒待ってaを表示
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60
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61
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0. そこから並行処理がはじまり、2秒待ってc
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62
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63
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0. 1秒待ってd
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64
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+
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53
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-
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65
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+
0. aの4秒後（dの1秒後）にbが出力されます
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1
調整
test
CHANGED
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@@ -23,3 +23,31 @@
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23
23
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}
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24
24
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25
25
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```
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26
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+
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27
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+
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28
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+
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29
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# 同期・非同期を調整
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30
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+
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31
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32
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33
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```javascript
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34
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35
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function wait(sec,txt) {
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36
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37
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return new Promise((resolve)=>{setTimeout((v)=>{console.log(v);resolve();},sec*1000,txt)});
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38
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+
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39
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}
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40
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+
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41
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(async()=>{
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42
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43
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wait(4,"x");
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44
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+
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45
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+
await wait(2,"y");
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46
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+
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47
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+
await wait(1,"z");
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48
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+
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49
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})();
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50
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+
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51
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```
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52
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+
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53
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上記であれば、2秒待ってy,1秒待ってz,その後全体の4秒後（zの1秒後）にxが出力されます
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