题解 | #字符串字符统计#

function count(str) {
            const obj = {}
            // 去除空格
            const arr = str.replace(/\s*/g, "").split('')

            arr.forEach(item => {
                if (!obj[item]) {
                    obj[item] = 1
                } else {
                    obj[item] += 1
                }
            });
            return obj
        }