What Is Javascript RegExp \0 Metacharacter In Javascript

Posted By Bajarangi soft , Posted On 16-09-2020

RegExp \0 metacharacter is used to find NULL character.\0 returns the position where the NULL character was found. If no match is found, it returns -1

The RegExp \0 Metacharacter in JavaScript is used to find the NULL character.
\0 returns the position where the NUL character was found. If no match is found, it returns -1.

Syntax:

/\0/  

or 

new RegExp("\\0")

Search for a NUL character in a string:

function myFunction() {
    var str = "Visit W3Schools.\0Learn JavaScript.";
    var patt1 = /\0/;
    var result = str.search(patt1);
    document.getElementById("demo").innerHTML = result;
}

Complete Code of JavaScript RegExp \0 Metacharacter.

<html>
<head>
    <title>JavaScript | RegExp \0 Metacharacter</title>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
</head>
<body>
<div class="container ">
    <div class="text-center">
        <h1>JavaScript | RegExp \0 Metacharacter</h1>
    </div>
    <br>
    <div class="well">
        <h3>Click the button to returns the position or returns -1.</h3>

        <button class="btn btn-primary" onclick="myFunction()">Press it</button>
        <br>
        <h1 id="demo"></h1>

        <script>
            function myFunction() {
                var str = "Learn More JavaScript.\0 From Bajarangisoft.";
                var patt1 = /\0/;
                var result = str.search(patt1);
                document.getElementById("demo").innerHTML = result;
            }
        </script>
    </div>
</div>
</body>
</html>

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