Function setHoverStyle

libs/echarts/echarts.simple.js:17370–17373

* Set hover style (namely "emphasis style") of element, * based on the current style of the given `el`. * * (1) * **CONSTRAINTS** for this method: * This method MUST be called after all of the normal styles having been adopted * to the `el`. * The input `hoverStyle` (that is, "emphasi

(el, hoverStyle)

 * @param {Object|boolean} [hoverStyle] See `graphic.setElementHoverStyle`.
 */
function setHoverStyle(el, hoverStyle) {
    setAsHighDownDispatcher(el, true);
    traverseUpdate(el, setElementHoverStyle, hoverStyle);
}

/**
 * @param {module:zrender/Element} el