# 2015年11月19日

## javascript

### 创建DOM元素

```javascript
var oLi=document.createElement("li");

 oUl.appendChild(oLi);//插入到最后；
```

`createElement(标签名）`：创建一个节点 `appendChild(节点）`：追加一个节点

`insertBefore(节点，原有节点）`：在已有元素前插入；

### 表格

getElementsByTagName("tbody")\[0] : tBodies\[0] getElementsByTagName("tr")\[0] : rows\[0] getElementsByTagName("td") : cells\[0]


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