Function getInstanceByDom

libs/echarts/echarts.simple.js:29275–29277

* @param {HTMLElement} dom * @return {echarts~ECharts}

(dom)

 * @return {echarts~ECharts}
 */
function getInstanceByDom(dom) {
    return instances[getAttribute(dom, DOM_ATTRIBUTE_KEY)];
}

/**
 * @param {string} key