js创建div节点

var chartdiv=document.getElementById("childid");
var parentDom=chartdiv.parentNode;
            var div=document.createElement("div");
            div.innerHTML+="<div id='"+chartdiv+"EchartsInnerDivTitle'><h3 style='text-align:center'>Echarts标题</h3></div>";
            div.innerHTML+="<div id='"+chartdiv+"EchartsInnerDivFilter'>Echarts过滤器</div>";
            parentDom.appendChild(div);
            parentDom.removeChild(chartdiv);
            parentDom.appendChild(chartdiv);