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<html> <head> <title>JavaScript RegExp multiline Property</title> </head> <body> <script type = "text/javascript"> var re = new RegExp( "string" ); if ( re.multiline ) { document.write("Test1-multiline property is set"); } else { document.write("Test1-multiline property is not set"); } re = new RegExp( "string", "m" ); if ( re.multiline ) { document.write("<br/>Test2-multiline property is set"); } else { document.write("<br/>Test2-multiline property is not set"); } </script> </body> </html>