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 the character else it returns -1.

Syntax: 

/\n/ 

or

new RegExp("\\n")

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

html

<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>

Output:

JavaScript RegExp \n Metacharacter

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

html

<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>

Output:

JavaScript RegExp \n Metacharacter

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

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

We have a complete list of Javascript RegExp expressions, to check those please go through this JavaScript RegExp Complete Reference article.

We have a Cheat Sheet on Javascript where we covered all the important topics of Javascript to check those please go through Javascript Cheat Sheet-A Basic guide to JavaScript.