找出重复字符

// 输出字符串中重复字符的个数和字符
function myfind(string) {
    let obj = {};
    let strArr = string.split('');
    for (let str of strArr) {
        if (obj[str]) {
            obj[str] += 1;
        } else {
            obj[str] = 1
        }
    }
    console.log(obj);
    for (let key in obj) {
        if (obj[key] > 1) {
            console.log({[key]: obj[key]})
        }
    }
}