JavaScript RegExp \0 Metacharacter18 Mar 2025 | 4 min read The regex "\0" shows the available null character in the input string in JavaScript. If the null value is available, then the position of the values shows; otherwise, the "-1" value shows using the search method. We can test, search, and match the required string using this Metacharacter. SyntaxThe syntax is used to show available characters at the string's start. or Supported Browsers:The RegExp \0 Metacharacter supports the following browsers supported using the JavaScript function:
ExamplesThe following examples are used to search, match, test, and execute null values using javascript's "\0" regex metacharacter. Example 1 The following example shows a test null character metacharacter of the regex in JavaScript. The test method shows true or false if the value is available. Output The output shows the non-word character of the string. ![]() Example 2 The following example shows the position of the null character metacharacter of the regex in JavaScript. If the null value is unavailable, then "-1" shows as an output. Output The output shows the position of the null character of the string. ![]() Example 3 The following example shows the position of the null character metacharacter of the regex in JavaScript. If the null value is unavailable, "null" is an output. Output The output shows the position of the null character of the string. ![]() Example 4 The following example shows the replacement value with the null character metacharacter using the regex in JavaScript. We can replace it with the "88" value to replace the null metacharacter "/0". Output The output shows the replaced value with the available null characters of the string. ![]() ConclusionThe regular expression helps to find null characters in the information using JavaScript methods. The simple Metacharacter helps to validate user-interactive data. Next TopicHow-to-become-a-javascript-developer |
The getAttribute() method is used to get the value of an attribute of the particular element. If the attribute exists, it returns the string representing the value of the corresponding attribute. If the corresponding attribute does not exist, it will return an empty string or...
2 min read
JavaScript functions enable us to perform a variety of tasks, make crucial choices, perform computations, and even enhance the interactivity of our websites. We shall discover the distinction between "function expression" and "function declaration" in this post. Both use the term function, which is where they...
3 min read
JavaScript is a flexible programming language that is mainly used for online development, but it can also be used with simple programs like Notepad. Even though advanced Integrated Development Environments (IDEs) are readily available, learning the foundations of coding in a simple setting promotes a...
6 min read
What is ? In JavaScript, assertions are statements that check whether a given condition is true. It is often used for debugging and testing purposes to ensure that certain conditions or assumptions about your code are valid. In simple words, with the use of assertions, we can include...
7 min read
We will understand the var, let and const keywords in JavaScript in this article. Let us understand each keyword properly one by one. var keyword The var keyword in JavaScript is utilized to define the variables in the code. Syntax: var variableName = value; In the above syntax, var: It...
5 min read
JavaScript is one of the widely used programming languages in web development circles, and exit functions are really helpful to developers. An exit function helps in terminating code execution at the earliest possible instance when considered fit. However, proper usage scenarios and techniques of application are...
5 min read
Arrays are fundamental data structures in JavaScript, providing a flexible way to store multiple values in a single variable. One common question among JavaScript developers is whether arrays can be extended once they are created. Let's delve into this topic to understand the dynamics of extending...
4 min read
As the name implies, the split() method in JavaScript splits the string into the array of substrings, puts these substrings into an array, and returns the new array. It does not change the original string. When the string is empty, rather than returning an empty array,...
3 min read
? In JavaScript, an array is an effective way to store a collection of items. One of the basic things that we can do with an array is looping or iterating over each of the elements there. Let's see different ways how we can loop through an...
6 min read
JavaScript compilers are crucial in contemporary software development, transforming the execution of JavaScript code and enhancing performance. A JavaScript compiler converts JavaScript code from a readable form into machine code for web browsers or runtime environments. In contrast to interpreters, compilers analyze and translate complete scripts...
7 min read
We request you to subscribe our newsletter for upcoming updates.
We provides tutorials and interview questions of all technology like java tutorial, android, java frameworks
G-13, 2nd Floor, Sec-3, Noida, UP, 201301, India