使用 for 迴圈、break 和 continue 查詢特定字母在語句中出現的次數 - JavaScript
我們需要編寫一個 JavaScript 函式來查詢特定字母在句子中出現的次數
示例
讓我們為此函式編寫程式碼 −
const string = 'This is just an example string for the program'; const countAppearances = (str, char) => { let count = 0; for(let i = 0; i < str.length; i++){ if(str[i] !== char){ // using continue to move to next iteration continue; }; // if we reached here it means that str[i] and char are same // so we increase the count count++; }; return count; }; console.log(countAppearances(string, 'a')); console.log(countAppearances(string, 'e')); console.log(countAppearances(string, 's'));
輸出
以下是控制檯中的輸出 −
3 3 4
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