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Application of the multiline attribute of JavaScript regular expressions_Basic knowledge

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2016-05-16 15:54:511614browse

Multiline regular expression is a read-only boolean property of the object. It specifies whether a particular regular expression performs multi-line matching, that is, whether or not it was created with the "m" attribute.
Grammar

RegExpObject.multiline

Here are the details of the parameters:

  • NA

Return value:

  • Returns "TRUE" if the "m" modification is set, otherwise returns "FALSE".

Example: 

<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>

This will produce the following results: 

Test1 - multiline property is not set
Test2 - multiline property is set

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