title: JScript error: Cannot assign to a function result
body: <p>In my application I am trying to hide a table based on a condition.
  I am using  simple javascript function to hide the table.</p>
  
  <p>the function is failing on the following line</p>
  
  <pre><code>if ((image1.trim() = '') &amp;&amp; (image2 != '1')) {
  </code></pre>
  
  <p>giving error </p>
  
  <blockquote>
    <p>'Microsoft JScript runtime error: Cannot assign to a function result'.</p>
  </blockquote>
  
  <p>Here is the code.</p>
  
  <p>Html code:</p>
  
  <pre><code> &lt;table id="tblImage" cellpadding="0" cellspacing="0" style="padding:2px 0px"&gt;
              &lt;tr&gt;                
                  &lt;td&gt;
                      &lt;div id="otherImages"&gt;&lt;/div&gt;
                  &lt;/td&gt;
              &lt;/tr&gt;
       &lt;/table&gt;   
  </code></pre>
  
  <p>Javascript function: </p>
  
  <pre><code>function DisplayTable() {
      var image1 = document.getElementById('ctl00_ContentPlaceHolder1_image1').value;
      var image2 = document.getElementById('ctl00_ContentPlaceHolder1_image2').value;
      if ((image1.trim() = '') &amp;&amp; (image2 != '')) {
           jQuery('#tblImage').hide();
      }
  }
  </code></pre>