如何修改我的代码(如下所示)以将表格元素(用红色圈出)转换为带有标题的表格,然后将每个列上方的标题("加载"和"左列和右列分别为kWh")?
元素," name"和"瓦特"是我想为("加载""千瓦时")创建标签,以及表格上方标题为" Power Usage"。现在,没有格式化,我无法从W3学校的教程进入我的代码。
function(){
var wrapper = document.createElement("div");
if(!this.loaded) {
wrapper.innerHTML = "Loading...";
return wrapper;
}
if(this.xml !== null){
var table = document.createElement("table");
table.classList.add("xsmall", "table");
var channels = this.xml.getElementsByTagName("channel");
for(var i = 0; i < channels.length; i++){
var row = document.createElement("tr");
for(var n = 0; n < channels[i].children.length; n++){
if(channels[i].children[n].tagName === "name" || channels[i].children[n].tagName === "watts"){
var element = document.createElement("td");
element.classList.add(channels[i].children[n].tagName);
if (channels[i].children[n].textContent != 0){
element.innerHTML = channels[i].children[n].textContent;
row.appendChild(element);
table.appendChild(row);
}
else {
table.removeChild(row); }
}
}
}
wrapper.appendChild(table);
} else {
console.log("Returned no Data");
wrapper.innerHTML = "NO DATA";
}
return wrapper;
},
答案 0 :(得分:1)
您只想使用您已经编写的JS构建一个类似于以下的表:
<table>
<caption>Put title here</caption>
<thead>
<tr>
<th>Load</th>
<th>kWh</th>
</tr>
</thead>
<tbody>
<tr>
<td>Kitchen Lights</td>
<td>2.799</td>
</tr>
</tbody>
</table>