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Detailed explanation of the use of global attributes in JavaScript regular expressions_Basic knowledge

WBOYOriginal: 2016-05-16 15:54:571445browse

global is a read-only Boolean property of the regular expression object. It specifies whether a specific regular expression is matched globally. Otherwise it is created using the "g" attribute.
Grammar

RegExpObject.global

Here are the details of the parameters:

Return value:

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

Example:

<html>
<head>
<title>JavaScript RegExp global Property</title>
</head>
<body>
<script type="text/javascript">
  var re = new RegExp( "string" );

  if ( re.global ){
   document.write("Test1 - Global property is set"); 
  }else{
   document.write("Test1 - Global property is not set"); 
  }
  re = new RegExp( "string", "g" );

  if ( re.global ){
   document.write("<br />Test2 - Global property is set"); 
  }else{
   document.write("<br />Test2 - Global property is not set"); 
  }
</script>
</body>
</html>

This will produce the following results:

Test1 - Global property is not set
Test2 - Global property is set

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