表单是<form>标签
<form>
姓名:
<input type="text" name="name">
<br />
密码:
<input type="password" name="password">
<select name="cars"><!--下拉框-->
<option value="volvo">Volvo</option>
<option value="saab">Saab</option>
<option value="fiat">Fiat</option>
<option value="audi">Audi</option>
<input type="button" value="Hello world!">
<input type="submit" value="Submit" />
</select>
</form>
插入图片
<p>
一幅图像:
<img src="/i/eg_mouse.jpg" width="128" height="128" />
</p>
<p>
一幅动画图像:
<img src="/i/eg_cute.gif" width="100" height="100" />
</p>
javascript
<script type="text/javascript">
document.write("<h1>Hello World!</h1>")
</script>