Number comparison out of the table ,JavaScript

테이블 안 숫자 비교

<script language="JavaScript">

<!--

function aaa() {

var nodeTr = document.getElementById("tb").childNodes[0];

var nodeTr2 = document.getElementById("tb2").childNodes[0];

var comp = 0;//추가부분

for (var i=0; i < nodeTr.childNodes.length; i++) {

for(var ii=0; ii < nodeTr.childNodes[i].childNodes.length; ii++) {

if(nodeTr.childNodes[i].childNodes[ii].childNodes[0].nodeValue == nodeTr2.childNodes[i].childNodes[ii].childNodes[0].nodeValue) {

comp++;//추가

}

}

}

if(comp == 9){alert('똑같다!!');}//추가및 이동

else{

alert('다르다!!');

return;

}

}

//-->

</script>

<input type="button" value="비교" onClick="aaa()">

<table id="tb" border="1" width="200">

<tr>

<td>2</td>

<td>3</td>

<td>5</td>

<tr>

<td>6</td>

<td>7</td>

<td>8</td>

<tr>

<td>4</td>

<td>3</td>

<td>6</td>

</tr>

</table>

<table id="tb2" border="1" width="200">

<tr>

<td>2</td>

<td>3</td>

<td>2</td>

<tr>

<td>6</td>

<td>7</td>

<td>8</td>

<tr>

<td>4</td>

<td>3</td>

<td>6</td>

</tr>

</table>