標的物在

<td align="right" class="quote_value"></td>

裡面顯示的數字。

試過這樣了，
暫時沒頭緒法子，
請教哥哥姐姐們：

<p>Click the button to return the number of cells in the table's first row.</p>

<table class="myTable">
  <tr>
    <td>cell 1</td>
    <td>cell 2</td>
    <td>cell 2</td>
    <td>cell 2</td>
  </tr>
  <tr>
    <td>cell 3</td>
    <td>cell 4</td>
  </tr>
</table>
<br> 

<button onclick="myFunction()">Try it</button>

<p id="demo"></p>

<script>
function myFunction() {
  var x = document.getElementsByClassName("myTable")[0].rows[0].cells.length;
  document.getElementById("demo").innerHTML = "Found " + x + " cells in the first tr element."+"<br>the value of [ row 2 cell 1 ] is : "+ document.getElementsByClassName("myTable")[0].rows[1].cells[0].innerHTML; 
}
</script>

<hr color=black>


<span id="copy1">id=copy1</span>／<span id="origin1">id=origin1</span>
<p>
<span class="copy1">class=copy1[0]</span>／<span class="origin1">class=origin1[0]</span>
<p>
<span class="copy1">class=copy1[1]</span>／<span class="origin1">class=origin1[1]</span>
<p>
<span class="url1">URL1</span>
<p>
<span id="url1">URL1</span>
<p>


<script>
document.getElementById('copy1').innerHTML = document.getElementById('origin1').innerHTML;

document.getElementsByClassName('copy1')[0].innerHTML = document.getElementsByClassName('origin1')[0].innerHTML;

document.getElementsByClassName('copy1')[1].innerHTML = document.getElementsByClassName('origin1')[1].innerHTML;

</script>

<iframe id=iframe0 src=http://delaycontent.megahubhk.com/Client/Mason/Quote.aspx?lang=tc&stock_id=1></iframe>

<script>
document.getElementsByClassName('url1')[0].innerHTML = document.getElementById('iframe0').contentWindow.document.getElementsByClassName('quote_value')[9].innerHTML;

document.getElementById('url1').innerHTML = document.getElementById("iframe0").contentWindow.document.getElementsByClassName("stockquote_table")[0].rows[9].cells[3].innerHTML;
</script>

<hr>