How to convert NaN to 0 using JavaScript?-JS Tutorial-php.cn

Home

Web Front-end

JS Tutorial

How to convert NaN to 0 using JavaScript?

王林

Aug 22, 2023 pm 10:17 PM

How to convert NaN to 0 using JavaScript?

We can use logical OR operator, double bitwise NOT operator, strict equality operator or inNaN() function to convert NaN to 0 using JavaScript. NaN in JavaScript means is not a number , its type is Number, but actually it is not a number. In this article, we will learn two methods to convert NaN to Boolean value.

Use logical OR (||) operator
Using the Double Tilde (~~) Operator
Use the strict equality operator (===)
Use isNaN() function

Use logical OR (||) operator

Logical OR (||) operator is used to check the authenticity of two values. Returns true if any of the operands are true, otherwise returns false if all operands are not true.

Use || operator to convert NaN to 0, we just use || operator to compare NaN with 0.

grammar

NaN || 0

Example

In this example, we use the || operator to convert NaN to 0.

<html>
<head>
   <title>Example- convert NaN to 0 using JavaScript</title>
</head>
<body>
   <h2 id="Converting-NaN-to-using-Javascript">Converting NaN to 0 using Javascript</h2>
   <script>
      
      // Defining Variables
      let x = NaN;
      let y = 0; 
      
      // Convert NaN to 0
      x = x || y;
      
      // Print the values
      document.write("Result: " + x);
   </script>
</body>
</html>

Use the double tilde (~~) operator

The double tilde or double-bit NOT operator is used to round down any positive number. We can also use Math.floor to achieve the same effect, but this operator is faster than the floor method. This operator only works with positive and negative numbers, returning zero in case the number is NaN.

grammar

~~NaN

Example

In this example, we use the ~~ operator to convert NaN to 0.

<html>
<head>
   <title>Example -convert NaN to 0 using JavaScript</title>
</head>
<body> 
   <h3 id="Converting-NaN-to-using-Javascript-Using-double-bitwise-not-operator">Converting NaN to 0 using Javascript Using double bitwise not operator</h3>
   <script>
      
      // Defining Variable
      let x = NaN;

      // Convert NaN to 0
      x = ~~x
      
      // Print the value
      document.write("Result: " + x);
   </script>
</body>
</html>

Use strict equality operator (===)

Strict equality (===) operator or strict equality operator is used to compare two or more operands by checking equality between values and types. Returns true if both value and type are equal, false otherwise.

Convert NaN to zero using the === operator, first we compare the NaN value with zero, if true, return NaN, otherwise return zero.

grammar

(NaN === 0) ? NaN : 0

Example

In this example, we use the strict equality operator to convert NaN to 0.

<html>
<head>
   <title>Example - convert NaN to 0 using JavaScript</title>
</head>
<body>
   <h3 id="Converting-NaN-to-using-Javascript-Using-Strict-equality-operator">Converting NaN to 0 using Javascript Using Strict equality operator</h3>
   <script>
      
      // Defining Variable
      let x = NaN;

      // Convert NaN to 0
      x = (x === 0) ? x : 0;
      
      // Print the value
      document.write("Result: " + x);
   </script>
</body>
</html>

Use isNaN() function

isNaN function is used to check whether a value is NaN. To convert NaN to 0, we check if the value is NaN. If yes, zero is returned.

grammar

isNaN(value) ? 0 : value

Example

In this example, we use the isNaN function to convert NaN to 0.

<html>
<head>
   <title>Example - convert NaN to 0 using JavaScript</title>
</head>
<body>
   <p id="demo">Converting NaN to 0 using Javascript Using isNaN function</p>
   <script>
      
      // Defining Variable
      let x = NaN;
      
      // Convert NaN to 0
      x = isNaN(x) ? 0 : x;
      
      // Print the value
      document.write("Result: " + x);
   </script>
</body>
</html>

The above is the detailed content of How to convert NaN to 0 using JavaScript?. For more information, please follow other related articles on the PHP Chinese website!

Statement

This article is reproduced at:tutorialspoint. If there is any infringement, please contact admin@php.cn delete

Replace String Characters in JavaScriptMar 11, 2025 am 12:07 AM

Detailed explanation of JavaScript string replacement method and FAQ This article will explore two ways to replace string characters in JavaScript: internal JavaScript code and internal HTML for web pages. Replace string inside JavaScript code The most direct way is to use the replace() method: str = str.replace("find","replace"); This method replaces only the first match. To replace all matches, use a regular expression and add the global flag g: str = str.replace(/fi

Custom Google Search API Setup TutorialMar 04, 2025 am 01:06 AM

This tutorial shows you how to integrate a custom Google Search API into your blog or website, offering a more refined search experience than standard WordPress theme search functions. It's surprisingly easy! You'll be able to restrict searches to y

8 Stunning jQuery Page Layout PluginsMar 06, 2025 am 12:48 AM

Leverage jQuery for Effortless Web Page Layouts: 8 Essential Plugins jQuery simplifies web page layout significantly. This article highlights eight powerful jQuery plugins that streamline the process, particularly useful for manual website creation

Build Your Own AJAX Web ApplicationsMar 09, 2025 am 12:11 AM

So here you are, ready to learn all about this thing called AJAX. But, what exactly is it? The term AJAX refers to a loose grouping of technologies that are used to create dynamic, interactive web content. The term AJAX, originally coined by Jesse J

What is 'this' in JavaScript?Mar 04, 2025 am 01:15 AM

Core points This in JavaScript usually refers to an object that "owns" the method, but it depends on how the function is called. When there is no current object, this refers to the global object. In a web browser, it is represented by window. When calling a function, this maintains the global object; but when calling an object constructor or any of its methods, this refers to an instance of the object. You can change the context of this using methods such as call(), apply(), and bind(). These methods call the function using the given this value and parameters. JavaScript is an excellent programming language. A few years ago, this sentence was

Improve Your jQuery Knowledge with the Source ViewerMar 05, 2025 am 12:54 AM

jQuery is a great JavaScript framework. However, as with any library, sometimes it’s necessary to get under the hood to discover what’s going on. Perhaps it’s because you’re tracing a bug or are just curious about how jQuery achieves a particular UI

10 Mobile Cheat Sheets for Mobile DevelopmentMar 05, 2025 am 12:43 AM

This post compiles helpful cheat sheets, reference guides, quick recipes, and code snippets for Android, Blackberry, and iPhone app development. No developer should be without them! Touch Gesture Reference Guide (PDF) A valuable resource for desig

How do I create and publish my own JavaScript libraries?Mar 18, 2025 pm 03:12 PM

Article discusses creating, publishing, and maintaining JavaScript libraries, focusing on planning, development, testing, documentation, and promotion strategies.

See all articles