Function elSetState

libs/echarts/echarts.simple.js:24794–24806

* Set state of single element * @param {module:zrender/Element} el * @param {string} state 'normal'|'emphasis' * @param {number} highlightDigit

(el, state, highlightDigit)

 * @param {number} highlightDigit
 */
function elSetState(el, state, highlightDigit) {
    if (el) {
        el.trigger(state, highlightDigit);
        if (el.isGroup
            // Simple optimize.
            && !isHighDownDispatcher(el)
        ) {
            for (var i = 0, len = el.childCount(); i < len; i++) {
                elSetState(el.childAt(i), state, highlightDigit);
            }
        }
    }
}

/**
 * @param {module:echarts/data/List} data