JavaScript RegExp \f Metacharacter

The RegExp \f Metacharacter in JavaScript is used to find the form feed character (form feed is a page-breaking ASCII control character). If it is found it returns the position else it returns -1.

Syntax: 

/\f/ 

or

new RegExp("\\f")

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

Javascript

function geek() {
    let str1 = "GeeksforGeeks@_123_$";
    let regex4 = /\f/;
    let match4 = str1.search(regex4);
    if (match4 == -1) {
        console.log("No form feed character present. ");
    } else {
        console.log("Index of form feed character: " + match4);
    }
}
geek();

Output

No form feed character present. 

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

Javascript

function geek() {
    let str1 = "123ge\feky456";
    let regex4 = new RegExp("\\f");
    let match4 = str1.search(regex4);
    console.log(" Index of form feed character: " + match4);
}
geek();

Output

 Index of form feed character: 5

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

• Chrome
• Safari
• Firefox
• Opera
• Edge

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.