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Introduction to JavaScript nan

The JavaScript isNaN() is one of the default methods for to determines whether the user-specified values are NaN or not, or else it will be coercion of inside the isNaN method it shows and specified for calculating the rules it may be alternatively that want to be used with the numbers, strings, etc. but all these set to be declared using “var” keyword in script any way some times numbers are called as Integers, etc. these should be used as the methods like Number.isNaN() it’s already specified in the ECMA script is also accepted in JavaScript technology.

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Syntax and Parameters

In javascript, each built-in method has its own syntax, and properties of its attributes will be used as the functionality of the web applications.

function name() { if(isNaN(variable name) { } }

The above codes are the basic syntax of the isNaN() method in the JavaScript function that can be used in the web pages with different scenarios. Based on the user requirements, these methods and nan values are validated in the client browser itself. Mainly it should be validated in the number format datatype values; it should calculate the date, time will calculate using milli also nanoseconds.

How does nan work in Javascript?

Generally, NaN means Not a Number; it’s most probably used to indicate whether the method contains either error or any exceptions that occurred in the condition loop for the functions. It should be returned with the any type of number; it should be a valid one because if suppose we are using invalid numbers, it automatically converted into 0 with the help of javascript. Using the isNaN() function is used to check whether the given number is NaN or not; if the number should be isNaN(), it returns the true condition and then assigns 0 as the value for chúng tôi is also one of the property for the Not-a-Number values the same type as previous the value is not legitimate that is not a legal one the number is the same as in the NaN property. Using the isNaN() method, it takes as the global function to check if the value is a NaN value. Sometimes it still shows and returns as the numerical values as the data types, but it always as the undefined real chúng tôi is also a special kind of function that it does not have real values so that it can be compared to itself; it does not return the true condition.

Examples of JavaScript nan

Given below are the examples of JavaScript nan:

Example #1

Code:

function demo() { var result = “”; document.getElementById(“first”).innerHTML = result; }

Example #2

Code:

function demo() { var d = 50; dayOfMonth = Number.NaN alert(“Welcome User Day of the Month should between 1 and 31.”) } Document.write(“The Value and dayOfMonth is: ” + d ); }

Output:

Example #3

Code:

.img { opacity:0.8; filter: alpha(opacity=1); background-color: red; padding: 11px; font-smooth: 5em; } function demo() { var result = “”; document.getElementById(“first”).innerHTML = result; }

Output:

Conclusion

JavaScript uses a different set of built-in methods; among that isNaN () is one of the frequent methods and values for comparing the numeric and non-numeric values in the applications. If the requirement happens, it should be validated in the client browser with the help of predefined conditions.