题解 | #计算某字符出现次数#
计算某字符出现次数
https://www.nowcoder.com/practice/a35ce98431874e3a820dbe4b2d0508b1
const str = readline();
const char = readline();
const getCharNum = (str, char) => {
// 正则，灰常好用~
const matchReg = new RegExp(`${char}`, 'ig');
const matchRes = str.match(matchReg) || [];
return matchRes.length;
}
console.log(getCharNum(str, char));
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