Code let pat = /cat/; // check for pattern using string search method document.writeln('<h3>Look for pattern using string search method</h3>'); if ("tomcat".search(pat) != -1) document.write("<p>cat found in tomcat</p>"); else document.write("<p>cat not found in tomcat</p>"); if ("tomboy".search(pat) != -1) document.write("<p>cat found in tomboy</p>"); else document.write("<p>cat not found in tomboy</p>"); // check for pattern using regular expression test method document.writeln('<h3>Look for pattern using regular expression test method</h3>'); if (pat.test("tomcat")) document.write("<p>cat found in tomcat</p>"); else document.write("<p>cat not found in tomcat</p>"); if (pat.test("tomboy")) document.write("<p>cat found in tomboy</p>"); else document.write("<p>cat not found in tomboy</p>");