JavaScript | RegExp \d Metacharacter

The RegExp \d Metacharacter in JavaScript is used to search digit characters. It is same as [0-9].

Syntax:

/\d/ 

or



new RegExp("\\d")

Syntax with modifiers:

/\d/g 

or

new RegExp("\\d", "g")

Example 1: This example searches the digits in the whole string.

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<!DOCTYPE html>
<html>
  
<head>
    <title>
        JavaScript RegExp \d Metacharacter
    </title>
</head>
  
<body style="text-align:center">
      
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
      
    <h2>RegExp \d Metacharacter</h2>
      
    <p>
        Input String: GeeksforGeeks@_123_$
    </p>
      
    <button onclick="geek()">
        Click it!
    </button>
      
    <p id="app"></p>
      
    <script>
        function geek() {
            var str1 = "GeeksforGeeks@_123_$";
            var regex4 = /\d/g;
            var match4 = str1.match(regex4);
  
            document.getElementById("app").innerHTML = 
                        "Found " + match4.length
                        + " matches: " + match4;
        }
    </script>
</body>
  
</html>                    

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Output:
Before Clicking the button:
backd
After Clicking the button:
backd

Example 2: This example searches the digits in the whole string.

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code

<!DOCTYPE html>
<html>
  
<head>
    <title>
        JavaScript RegExp \d Metacharacter
    </title>
</head>
  
<body style="text-align:center">
      
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
      
    <h2>RegExp \d Metacharacter</h2>
      
    <p>Input String: Geeky@128</p>
      
    <button onclick="geek()">
        Click it!
    </button>
      
    <p id="app"></p>
      
    <script>
        function geek() {
            var str1 = "Geeky@128";
            var regex4 = new RegExp("\\d", "g");         
            var match4 = str1.match(regex4);
              
            document.getElementById("app").innerHTML =
                        "Found " + match4.length
                        + " matches: " + match4;
        }
    </script>
</body>
  
</html>                    

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Output:
Before Clicking the button:
backd
After Clicking the button:
backd

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

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


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