关于数据结构:数据结构字符串

数字字符串转成数字

      function strNumberToNumber (s) {        let i = 0        let res = 0        while (i < s.length && s[i] >= '0' && s[i] <= '9') {          // ans = ans * 10 + (s[i++] - '0');          let cur = +s[i] //字符串转整数          res = res * 10 + cur          i++        }        return res      }      const s = '4193'      const result = strNumberToNumber(s)      console.log('result', result) //4193