react怎么动态增加节点-快报

/**********组件KmcDialog************//** * 显示弹框 */KmcDialog.showInstance = function(properties) {    if (!document.getElementById("KmcDialog")) {        let props = properties || {};        let div = document.createElement("div");        div.setAttribute("id", "KmcDialog");        document.body.appendChild(div);        ReactDOM.render(React.createElement(KmcDialog, props), div);    }}/** * 删除弹框 */KmcDialog.removeInstance = function() {    if(document.getElementById("KmcDialog")) {        document.getElementById("KmcDialog").remove();    }}

KmcDialog.showInstance({    isShow: true});KmcDialog.removeInstance();