function isCoordSupported(coordType) {
    return indexOf(COORDS, coordType) >= 0;
}
Calculate slider move result.
Usage:
(1) If both handle0 and handle1 are needed to be moved, set minSpan the same as
maxSpan and the same as `Math.abs(handleEnd[1] - handleEnds[0])`.
(2) If handle0 is forbidden to cross handle1, set minSpan as `0`.

@param {number} delta Move length.
@param {Array.<number>} handleEnds handleEnds[0] can be bigger then handleEnds[1].
             handleEnds will be modified in this method.
@param {Array.<number>} extent handleEnds is restricted by extent.
             extent[0] should less or equals than extent[1].
@param {number|string} handleIndex Can be 'all', means that both move the two handleEnds.
@param {number} [minSpan] The range of dataZoom can not be smaller than that.
             If not set, handle0 and cross handle1. If set as a non-negative
             number (including `0`), handles will push each other when reaching
             the minSpan.
@param {number} [maxSpan] The range of dataZoom can not be larger than that.
@return {Array.<number>} The input handleEnds.