JavaScript - RegExp ignoreCase Property

Description

ignoreCase is a read-only boolean property of RegExp objects. It specifies whether a particular regular expression performs case-insensitive matching, i.e., whether it was created with the "i" attribute.

Syntax

Its syntax is as follows −

RegExpObject.ignoreCase

Return Value

Returns "TRUE" if the "i" modifier is set, "FALSE" otherwise.

Example

Try the following example program.

Live Demo

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

Output

Test1 - ignoreCase property is not set
Test2 - ignoreCase property is set

javascript_regexp_object.htm