JavaScript | RegExp \n Metacharacter

The RegExp \n Metacharacter in JavaScript is used to find the newline character. If it is found it returns the position of character else it returns -1.

Syntax:

/\n/ 

or



new RegExp("\\n")

Example 1: This example searches for the newline character in the string.

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<!DOCTYPE html>
<html>
  
<head>
    <title>
        JavaScript RegExp \n Metacharacter
    </title>
</head>
  
<body style="text-align:center">
      
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
      
    <h2>RegExp \n 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 = /\n/;
            var match4 = str1.search(regex4);
            if(match4 == -1) {         
                document.getElementById("app").innerHTML
                    = "No newline characters present. ";
            
            else {
                document.getElementById("app").innerHTML
                = "Index of newline character: " + match4;
            }
        }
    </script>
</body>
  
</html>                    

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Output:
Before Clicking the button:
backn
After Clicking the button:
backn

Example 2: This example searches the position of the newline character in the string.

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<!DOCTYPE html>
<html>
  
<head>
    <title>
        JavaScript RegExp \n Metacharacter
    </title>
</head>
  
<body style="text-align:center">
      
    <h1 style="color:green">
        GeeksforGeeks
    </h1>
      
    <h2>RegExp \n Metacharacter</h2>
      
    <p>String: 123ge\neky456</p>
      
    <button onclick="geek()">
        Click it!
    </button>
      
    <p id="app"></p>
      
    <script>
        function geek() {
            var str1 = "123ge\neky456";
            var regex4 = new RegExp("\\n");         
            var match4 = str1.search(regex4);
            document.getElementById("app").innerHTML
            = " Index of newline character: " + match4;
        }
    </script>
</body>
  
</html>                    

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Output:
Before Clicking the button:
backn
After Clicking the button:
backn

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

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


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