Hi Friends 👋, Welcome To Infinitbility! ❤️ To get minutes between two dates, Get both dates as a time using the getTime() method. subtract them which you get using the getTime() method. Devied your output time with / (1000 * 60) % 60 It will return your difference in dates in a minutes. The getTime() method returns the number of milliseconds since the ECMAScript epoch. You can use this method to help assign a date and time to another Date object....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To check string is alphanumeric, use this regex /^[a-z0-9]+$/i if it gets true means the string contains only alphabets and numbers. Today, I’m going to show How do I check if a string is alphanumeric in javascript, here I will use the javascript test() method and regex as mentioned above to validate whether the string is alphanumeric or not. Let’s start the today’s tutorial How do you check if a string is alphanumeric in javascript?...

Hi Friends 👋, Welcome To Infinitbility! ❤️ To check if a number is divisible by another number, use the remainder ( % ) operator if get 0 means the number is divisible else not. Note: Here, another number is any number like 3, 4, 5, 6, 7, 8, etc. Today, I’m going to show How do I check if a number is divisible by another number in javascript, here I will use the modulo ( % ) operator and if....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To check if a number is between two values, Apply greater then and less than both conditions with and ( && ) operator. if get true means a number in a range. Note: Here we are using && operator to reduce the number of codes, there have a lot of ways to do that Today, I’m going to show How do I check if a number is between two values in javascript, here I will write some conditions and an if....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To use flow-js-testing and run test cases of cadence smart contract, You have to install node.js, flow CLI after you able to run your test cases in flow emulator using npm run test command. Note: Here, we are running kitty-items test cases For NFT cadence smart contract Today, I’m going to show How do I run test cases of cadence smart contract using flow js testing, here I will use onflow kitty items repo https://github....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To create multiple nodes in a single module or package, just put one more key and values in your package.json file where node-red/nodes is mentioned. like the below example. "node-red" : { "nodes": { "lower-case": "lower-case/lower-case.js", "upper-case": "upper-case/upper-case.js" } }, Note: We can make n number of custom nodes in a single module but every node should have different js and html. Today, I’m going to show How do I create multiple nodes in the node-red single module, here I will create a custom node of lower-case and upper-case in a single package....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To check number is a prime number, looping through 2 to your given number-1 and check is any divisible number or not, if have means it’s not a prime number. Note: 1 is considered neither prime nor composite. Today, I’m going to show How do I check if the number is a prime number or not in Javascript, here I will create a custom function isPrimeNumber() where I will check if there have any divisible number based on this it will return a boolean value....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To check character is a letter or number, JavaScript provides the isNaN() method just pass your character as a parameter it will check character is NaN ( Not a number ) when it returns false means the character is a number else validate the character with regex code /^[a-zA-Z]+$/ to check is a letter or not. Today, I’m going to show How do I check if a character is a letter or number in Javascript, here I will use the javascript string isNaN() method, and regex code /^[a-zA-Z]+$/` to check if a character is a letter or number....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show you, how do you check if a string is a valid URL in javascript, here I will use the regex expression to validate URL string. To validate the string URL, I will use the below regex which can handle the below cases. protocol Domain name address IP (v4) address port and path URL query string fragment locator function isValidURL(str) { var pattern = new RegExp('^(https?...

Hi Friends 👋, Welcome To Infinitbility! ❤️ To check number is an integer or float, JavaScript provides isInteger() method just pass your number as a parameter and it will return true if the number is an integer or else false. Today, I’m going to show How do I check if the number is an integer or float in Javascript, here I will use the javascript string isInteger() method, to check if a number is an integer or float....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show How do check if the first character of a string is a letter in Javascript, here I will use the javascript string charAt() method and regex expression to check if the first character of a string is an alphabet or not. What is a charAt() method? The String object’s charAt() method returns a new string consisting of the single UTF-16 code unit located at the specified offset into the string....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show How do I check if the first letter of a string is uppercase in Javascript, here I will use the javascript string toUpperCase() method and compression operator to check if the first character of a string is an capital or not. What is a toUpperCase() method? The toUpperCase() method returns the calling string value converted to uppercase (the value will be converted to a string if it isn’t one)....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show How do I check if the first character of a string is a number in Javascript, here I will use the javascript string charAt(), and isNaN() method to check if the first character of a string is a number or not. What is a charAt() method? The String object’s charAt() method returns a new string consisting of the single UTF-16 code unit located at the specified offset into the string....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show How do I check if the first character of a string is a specific character in Javascript, here I will use the javascript string charAt() method to check if the first character of a string is a specific character or not. What is a charAt() method? The String object’s charAt() method returns a new string consisting of the single UTF-16 code unit located at the specified offset into the string....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show How do I check if a string contains a specific character in Javascript, here I will use the javascript string includes() method to check if a string contains a specific character or not. What is a includes() method? The includes() method determines whether an array includes a certain value among its entries, returning true or false as appropriate....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show How do I check special characters in strings in Javascript, here I will use regex expression to check special characters in a string or not. What is a special character? Special characters are symbols that do not appear on a keyboard. What are considered special characters and symbols will vary depending on your country, your installed language in Word and your keyboard like [], {}, (), #, @ etc....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show How do I check if a string is a pangram in Javascript, here I will write a custom function to check if a string is a pangram or not. What is a pangram? A pangram is a string that contains every letter of the English alphabet. We are required to write a JavaScript function that takes in a string as the first and the only argument and determines whether that string is a pangram or not....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show How do I check if two strings are anagrams of each other in Javascript, here I will write a custom function to check if two strings are anagrams of each other or not. What is an anagram? An Anagram is a word or phrase formed by rearranging the letters of a different word or phrase, typically using all the original letters exactly once....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show how do you check if a string is equal to another string in javascript, here I will use the == and === operator to compare strings and check whether both are equal or not. The == in JavaScript is used for comparing two variables, but it ignores the data type of variable. The === is used for comparing two variables, but this operator also checks datatype and compares two values....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Today, I’m going to show how do you check if a string is hexadecimal in javascript, here I will use the regex expression to check string is a hex code or not. Here, we will write reg expression for validating string hex code, and javascript provides test() method validate string using regex, we are also going to do same. Let’s start today’s tutorial How to check if a string is hexadecimal in javascript?...