回答編集履歴
1
コードのミス修正
test
CHANGED
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@@ -56,7 +56,7 @@
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56
56
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57
57
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elem[i] = document.getElementById('thumb' + i);
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58
58
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59
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-
elem[i].addEventListener('mouseover',
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59
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+
elem[i].addEventListener('mouseover', (event) => { // 引数を受け取る
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60
60
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61
61
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event.target.style.height = '300px'; // elem[i] -> event.target
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62
62
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@@ -64,7 +64,7 @@
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64
64
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65
65
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66
66
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67
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-
elem[i].addEventListener('mouseout',
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67
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+
elem[i].addEventListener('mouseout', (event) => { // 引数を受け取る
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68
68
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69
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event.target.style.height = '180px'; // elem[i] -> event.target
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70
70
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