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<h1>XPath Operators</h1>
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<p class="intro">An XPath expression returns either a node-set, a string, a
Boolean, or a number.</p>
<hr />
<h2>XPath Operators</h2>
<p>Below is a list of the operators that can be used in XPath expressions:</p>
<table class="ex" cellspacing="0" border="1" width="100%">
<tr>
<td width="15%" valign="top"><b>Operator</b></td>
<td width="30%" valign="top"><b>Description</b></td>
<td width="30%" valign="top"><b>Example</b></td>
<td width="25%" valign="top"><b>Return value</b></td>
</tr>
<tr>
<td valign="top">|</td>
<td valign="top">
Computes two node-sets</td>
<td valign="top">
//book | //cd</td>
<td valign="top">
Returns a node-set with all book and cd elements</td>
</tr>
<tr>
<td valign="top">+</td>
<td valign="top">
Addition</td>
<td valign="top">
6 + 4</td>
<td valign="top">
10</td>
</tr>
<tr>
<td valign="top">-</td>
<td valign="top">
Subtraction</td>
<td valign="top">
6 - 4</td>
<td valign="top">
2</td>
</tr>
<tr>
<td valign="top">*</td>
<td valign="top">
Multiplication</td>
<td valign="top">
<p>6 * 4</p>
</td>
<td valign="top">
24</td>
</tr>
<tr>
<td valign="top">div</td>
<td valign="top">
Division</td>
<td valign="top">
8 div 4</td>
<td valign="top">
2</td>
</tr>
<tr>
<td valign="top">=</td>
<td valign="top">
Equal</td>
<td valign="top">
price=9.80</td>
<td valign="top">
true if price is 9.80<br />
false if price is 9.90</td>
</tr>
<tr>
<td valign="top">!=</td>
<td valign="top">
Not equal</td>
<td valign="top">
price!=9.80</td>
<td valign="top">
true if price is 9.90<br />
false if price is 9.80</td>
</tr>
<tr>
<td valign="top"><</td>
<td valign="top">
Less than</td>
<td valign="top">
price<9.80</td>
<td valign="top">
true if price is 9.00<br />
false if price is 9.80</td>
</tr>
<tr>
<td valign="top"><=</td>
<td valign="top">
Less than or equal to</td>
<td valign="top">
price<=9.80</td>
<td valign="top">
true if price is 9.00<br />
false if price is 9.90</td>
</tr>
<tr>
<td valign="top">></td>
<td valign="top">
Greater than</td>
<td valign="top">
price>9.80</td>
<td valign="top">
true if price is 9.90<br />
false if price is 9.80</td>
</tr>
<tr>
<td valign="top">>=</td>
<td valign="top">
Greater than or equal to</td>
<td valign="top">
price>=9.80</td>
<td valign="top">
true if price is 9.90<br />
false if price is 9.70</td>
</tr>
<tr>
<td valign="top">or</td>
<td valign="top">
or</td>
<td valign="top">
price=9.80 or price=9.70</td>
<td valign="top">
true if price is 9.80<br />
false if price is 9.50</td>
</tr>
<tr>
<td valign="top">and</td>
<td valign="top">
and </td>
<td valign="top">
price>9.00 and price<9.90</td>
<td valign="top">
true if price is 9.80<br />
false if price is 8.50</td>
</tr>
<tr>
<td valign="top">mod</td>
<td valign="top">
Modulus (division remainder)</td>
<td valign="top">
5 mod 2</td>
<td valign="top">
1</td>
</tr>
</table>
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