multiline is a read-only boolean property of RegExp objects. It specifies whether a particular regular expression performs multiline matching, i.e., whether it was created with the "m" attribute.
Its syntax is as follows −
RegExpObject.multiline
Returns "TRUE" if the "m" modifier is set, "FALSE" otherwise.
Try the following example program.
<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>
Test1 - multiline property is not set Test2 - multiline property is set