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📄 basic_comparisons.jsp

📁 jsp入门级代码
💻 JSP
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<%@ page isELIgnored="false" %>
<html>
<head><title>Expression Language - Basic Comparisons</title></head>
<body>
<h4>EL - Basic Comparisons: "==","!=","<",">","<=",">="</h4>
<hr>
<table>
  <tr>
  	<td>
	    <ul>
	      <li>Less-than (&lt; or lt)</li>
	      <li>Greater-than (&gt; or gt)</li>
	      <li>Less-than-or-equal (&lt;= or le)</li>
	      <li>Greater-than-or-equal (&gt;= or ge)</li>
	      <li>Equal (== or eq)</li>
	      <li>Not Equal (!= or ne)</li>
	    </ul>  	
	  </td>
	  <td>
	    <blockquote>
	      <u><b>Numeric</b></u>
	      <code>
	      <table border="1">
	        <thead>
				    <td><b>EL Expression</b></td>
				    <td><b>Result</b></td>
		      </thead>
				  <tr>
				    <td>\${1 &lt; 2}</td>
				    <td>${1 < 2}</td>
				  </tr>
				  <tr>
				    <td>\${1 lt 2}</td>
				    <td>${1 lt 2}</td>
				  </tr>
				  <tr>
				    <td>\${1 &gt; (4/2)}</td>
				    <td>${1 > (4/2)}</td>
				  </tr>
				  <tr>
				    <td>\${1 &gt; (4/2)}</td>
				    <td>${1 > (4/2)}</td>
				  </tr>
				  <tr>
				    <td>\${4.0 &gt;= 3}</td>
				    <td>${4.0 >= 3}</td>
				  </tr>
				  <tr>
				    <td>\${4.0 ge 3}</td>
				    <td>${4.0 ge 3}</td>
				  </tr>
				  <tr>
				    <td>\${4 &lt;= 3}</td>
				    <td>${4 <= 3}</td>
				  </tr>
				  <tr>
				    <td>\${4 le 3}</td>
				    <td>${4 le 3}</td>
				  </tr>
				  <tr>
				    <td>\${100.0 == 100}</td>
				    <td>${100.0 == 100}</td>
				  </tr>
				  <tr>
				    <td>\${100.0 eq 100}</td>
				    <td>${100.0 eq 100}</td>
				  </tr>
				  <tr>
				    <td>\${(10*10) != 100}</td>
				    <td>${(10*10) != 100}</td>
				  </tr>
				  <tr>
				    <td>\${(10*10) ne 100}</td>
				    <td>${(10*10) ne 100}</td>
				  </tr>
				</table>
	      </code>
	    </blockquote>	  	
	  </td>
	  <td>
      <blockquote>
      <u><b>Alphabetic</b></u>
      <code>
        <table border="1">
          <thead>
				    <td><b>EL Expression</b></td>
				    <td><b>Result</b></td>
				  </thead>
				  <tr>
				    <td>\${'a' &lt; 'b'}</td>
				    <td>${'a' < 'b'}</td>
				  </tr>
				  <tr>
				    <td>\${'hip' &gt; 'hit'}</td>
				    <td>${'hip' > 'hit'}</td>
				  </tr>
				  <tr>
				    <td>\${'4' &gt; 3}</td>
				    <td>${'4' > 3}</td>
				  </tr>
				</table>
      </code>
    </blockquote>	  	
	  </td>
	</tr>
</table>
</body>
</html>

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