文字列内の文字の出現回数を確認する. JavaScript

文字列内の文字の出現回数を確認する. JavaScript



for ループを使用して文字の出現を確認する
JavaScript example code

JavaScript

  Output result
Enter a string: school
Enter a  letter to check: o
2
正規表現を使用して文字の出現を確認する
JavaScript example code

JavaScript

  Output result
Enter a string: school
Enter a  letter to check: o
2


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