JavaScript | RegExp . Metacharacter

The RegExp . Metacharacter in JavaScript is used to search single character, except line terminator or newline.

Syntax:

/regexp./ 

or



new RegExp("regexp.")

Syntax with modifiers:

/regexp./g 

or

new RegExp("regexp.", "g")

Example 1: This example searches the words whose starting character is “A” and ending character is “C” with only one character in between them.

filter_none

edit
close

play_arrow

link
brightness_4
code

<!DOCTYPE html>
<html>
  
<head>
    <title>
        JavaScript RegExp . Metacharacter
    </title>
</head>
  
<body style="text-align:center">
      
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
      
    <h2>RegExp . Metacharacter</h2>
      
    <p>
        Input String: ABC, A3C, A C, AXXCC!
    </p>
      
    <button onclick="geek()">
        Click it!
    </button>
      
    <p id="app"></p>
      
    <script>
        function geek() {
            var str1 = "ABC, A3C, A C, AXXCC!";
            var regex4 = /A.C/g;
            var match4 = str1.match(regex4);
  
            document.getElementById("app").innerHTML =
                        "Found " + match4.length
                        + " matches: " + match4;
        }
    </script>
</body>
  
</html>                    

chevron_right


Output:
Before Clicking the button:
dot
After Clicking the button:
dot

Example 2: This example searches the words having “a” as starting letter and “c” as ending the letter with only one character in between.

filter_none

edit
close

play_arrow

link
brightness_4
code

<!DOCTYPE html>
<html>
  
<head>
    <title>
        JavaScript RegExp . Metacharacter
    </title>
</head>
  
<body style="text-align:center">
      
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
      
    <h2>RegExp . Metacharacter</h2>
      
    <p>
        Input String: ABC, A3X, a x, AXXCC!
    </p>
      
    <button onclick="geek()">
        Click it!
    </button>
      
    <p id="app"></p>
      
    <script>
        function geek() {
            var str1 = "ABC, A3X, a x, AXXCC!";         
            var regex4 = new RegExp("a.x", "g");
            var match4 = str1.match(regex4);
  
            document.getElementById("app").innerHTML =
                        "Found " + match4.length
                        + " matches: " + match4;
        }
    </script>
</body>
  
</html>                    

chevron_right


Output:
Before Clicking the button:
dot
After Clicking the button:
dot

Supported Browsers: The browsers supported by RegExp . Metacharacter are listed below:

  • Google Chrome
  • Apple Safari
  • Mozilla Firefox
  • Opera
  • Internet Explorer


My Personal Notes arrow_drop_up


If you like GeeksforGeeks and would like to contribute, you can also write an article using contribute.geeksforgeeks.org or mail your article to contribute@geeksforgeeks.org. See your article appearing on the GeeksforGeeks main page and help other Geeks.

Please Improve this article if you find anything incorrect by clicking on the "Improve Article" button below.




Article Tags :

Be the First to upvote.


Please write to us at contribute@geeksforgeeks.org to report any issue with the above content.