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.
<!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:
After Clicking the button:
Example 2: This example searches the position of the newline character in the string.
<!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:
After Clicking the button:
Supported Browsers: The browsers supported by RegExp \n Metacharacter are listed below:
- Google Chrome
- Apple Safari
- Mozilla Firefox
- Opera
- Internet Explorer
