点按钮 表格就显示出来，这里哪有错，帮我改改

Question

<input type="button" onclick="bb.style.display='block'" value="Click">
<div style="display:none" id="bb">
<table width="100%"  border="1">
  <tr>
 <td>asdfasdfasdf</td>
  </tr>
</table>
</div>

Answer 1

<javascript>
function onc() {
  if(bb.style.display=='block') {
    bb.style.display=='none'
  }else {
    bb.style.display=='block'
  }
}
</javascript><input type="button" onclick="onc();" value="Click">
<div style="display:none" id="bb">
<table width="100%"  border="1">
  <tr>
 <td>asdfasdfasdf</td>
  </tr>
</table>
</div>xiugai yixia :)

Answer 2

this.nextSibling.style.display='block' 为什么用nextSibling就不幸呢？