使用for循环，中断和继续来查找特定字母出现在句子中的次数-JavaScript

我们需要编写一个JavaScript函数来查找特定字母在句子中出现的次数

示例

让我们为该函数编写代码-

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));

输出结果

以下是控制台中的输出-

3 3 4