题解 | #计算某字母出现次数#

function getCharTimesInStr(str, c) {
    const len = str.length;
    let times = 0;
    const newC = String(c).toLocaleLowerCase();
    if (1 <= len && len <= 1000) {
        const arr = str.toLocaleLowerCase().split('');
        arr.map(item => {
            if (item === newC) {
                times++
            }
        })
    }
    return times;
}

const str = readline();
const char = readline();
console.log(getCharTimesInStr(str, char))