Function detectValue

_benchmarks/sample_echarts.js:17793–17802

(val)

      }

      function detectValue(val) {
        var beStr = isString(val); // Consider usage convenience, '1', '2' will be treated as "number".
        // `isFinit('')` get `true`.

        if (val != null && isFinite(val) && val !== '') {
          return beStr ? BE_ORDINAL.Might : BE_ORDINAL.Not;
        } else if (beStr && val !== '-') {
          return BE_ORDINAL.Must;
        }
      }

      return BE_ORDINAL.Not;
    }