为什么没有触发lable标签呢?
<form>
<lable for="footing">慢跑</lable>
<input type="checkbox" name="sports" id="footing" />
<br/>
<lable for="hike">登山</lable>
<input type="checkbox" name="sports" id="hike" />
<br/>
<lable for="basketball">篮球</lable>
<input type="checkbox" name="sports" id="basketball">
</form>