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<!DOCTYPE html> <html> <body> <p>Do a global search, and test for "Hello" and "W3Schools" in a string:</p> <button onclick="myFunction()">Try it</button> <p id="demo"></p> <script> function myFunction() { var str = "Hello world!"; //look for "Hello" var patt = /Hello/g; var result = patt.test(str); //look for "W3Schools" patt2 = /W3Schools/g; result2 = patt2.test(str); document.getElementById("demo").innerHTML = result + "<br>" + result2; } </script> </body> </html>