Extract number from string in typescript To extract a number from a string in typescript, use the match() method with the /\d+/g regex it will find all numbers from the string and return as an array of numbers. const REGEX = /\d+/g; let sampleString: string = "#div-name-1234-characteristic:561613213213"; let arrOfNumber: Array<number> = sampleString.match(REGEX); // 👇️ [ '1234', '561613213213' ] console.log(arrOfNumber) Today, I’m going to show you How to i extract a number from a string in typescript, as mentioned above, I’m going to use the use match() and join() method with /\d+/g regex to extract numbers from string and convert in digits....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To remove space between strings in javascript, just use the replace() method with the /\s/g regex then it will return a new string without spaces. The replace() method returns a new string with some or all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function called for each match....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To add a character in a string in javascript, just use the + operator it will concat two strings in one string and for short syntax, you can also use the += operator. let’s take an example of adding two characters in a single string. let name = ""; name += "Infinite"; name += " "; name += "Ability"; console.log(name) // 👇️ Output // Infinite Ability Today, I’m going to show you How do I add a character in a string in javascript, as above mentioned here, I’m going to use the + operator to add a string to another string....

Delete flows in node-red To delete flow in node-red, select the flow which you want to delete click on the right top corner bar select Flows -> Delete option it will remove select flow from the node-red flows editor. or you can follow the red circle area to delete the flow mentioned below the image. Node-red, delete flows example Usefull Links Read further tutorials if you are curious about node-red....

Uninstall node in node-red To uninstall node in node-red, go to your .node-red folder using terminal enter npm remove node-package-name re-start node-red it will remove the package from node-red, you can also use this method from your custom node. it works perfectly. Example of uninstalling package in node-red Here, we are going to perfectly remove the package from node-red. In the previous tutorial, I created a node-env node where I have to explain how to use environment variables in node-red....

check an empty string in typescript To check an empty string in typescript, use the if..else statement just pass and put your string variable in an if condition if it’s empty it will go to the else statement. Today, I’m going to show you How do i check an empty string in typescript, as mentioned above, I’m going to use the use if..else statement to check the typescript empty string....

Stringify JSON object in typescript To stringify json object in typescript, use JSON.stringify() it will convert your json object to json string. The JSON.stringify() method converts a JavaScript object or value to a JSON string, optionally replacing values if a replacer function is specified or optionally including only the specified properties if a replacer array is specified. interface domain { name: string, domain: string, } const arr: Array<domain> = [ { name: "infinitbility", domain: "infinitbility....

Convert array to string in typescript To convert array to string in typescript, use the join() method it will convert the array to a comma (,) separated string. The join() method creates and returns a new string by concatenating all of the elements in an array (or an array-like object), separated by commas or a specified separator string. If the array has only one item, then that item will be returned without using the separator....

Remove all space from the string in typescript To remove all white space from the string in typescript, use the replace() method with the /\s/g regex it will remove all whitespace from the string. const str: string = ' first second third '; // ✅ Remove all Whitespace const withoutAnyWhitespace: string = str.replace(/\s/g, ''); console.log(withoutAnyWhitespace); // 👉️ "firstsecondthird" Remove whitespace from the beginning and end of the string in typescript To remove space from the start and end of the string in typescript, use the trim() method it will remove space from both sides and return a new string....

Add double quotes in string in typescript To add double quotes in the string in typescript, use double quotes both side with the + operator it will concatenate the string and return a new string with double quotes like below example. let str: string = "infinitbility"; // add double quotes str = '"' + str + '"'; console.log(str) // 👉️ '"infinitbility"' Add double quotes at the beginning of string in typescript To add double quotes at the beginning of string in typescript, use double quotes at starting of the string with the + operator it will concatenate the string and return a new string with double quotes like below example....

Hi Friends 👋, Welcome To Infinitbility! ❤️ Create a dropdown in node-red To create dropdown ( select ) in node-red, use node red typedInput() function it will create dropdown list based on provided options by you.infinitbility.github.ioinfinitbility.github.io <label for="node-input-domain"><i class="fa fa-tag"></i>Domain</label> <input type="text" id="node-input-domain" /><br/><br/> let options = [ { value: "infinitbility.github.io", label: "infinitbility.github.io"}, { value: "aguidehub.com", label: "aguidehub.com"}, { value: "sortoutcode.com", label: "sortoutcode.com"}, ]; $("#node-input-domain").typedInput({type:"domain", types:[{ value: "domain", options:options }]}) Create a dropdown in node-red with multiple select options To create multiple values select dropdown in node-red, pass the multiple: true option in node-red typedInput API it will enable multiple selections of dropdown value....

Hi Friends 👋, Welcome To Infinitbility! ❤️ use environment variables in node-red To use environment variables in node-red, install the dotenv and path packages create a .env file with some key and value load env in your node-red js file access env variables using process.env After doing the above steps you can use your env variables using process.env like the below code example const path = require('path') require('dotenv').config({path: path.resolve(__dirname, './.env')}) process....

Add new line in string in typescript To add a new line in string in typescript, use new line \n with the + operator it will concatenate the string and return a new string with a new line separator. let str: string = ""; // add new line str = "Hi Friends" + "\n"; str = str + "Welcome to Infinitbility"; console.log(str) // Output // 'Hi Friends // Welcome to Infinitbility' put the "\n" where you want to break the line and concatenate another string....

Add space beginning of the string in typescript To add space beginning of the string in typescript, use blank space with the + operator it will concatenate the string and return a new string with space. let str: string = "infinitbility"; // add blank space str = " " + str; console.log(str) // 👉️ " infinitbility" To show space at the beginning of the string you should put a blank space string before the + operator, like in the above example....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To add two numbers in react native, use the + addition operator it will add if your value datatype is a number else if your value datatype is string first convert it using parseInt() and then perform addition operation. In the following example, we will take the sample numbers, and strings and perform add operation using the + addition operator. Adding Two numbers example let num1 = 30; let num2 = 34; num1 + num2; // 64 Adding Two string numbers example let num1 = "30"; let num2 = "34"; parseInt(num1) + parseInt(num2); // 64 Today, I’m going to show you How do i add two numbers in react native, as mentioned above here, I’m going to use the + addition operator....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To check webpack version in react js, Open the terminal ( CMD ) and navigate to your project. run the npm list webpack or yarn list webpack command it will list down all your packages with their webpack version. Today, I’m going to show you How do I check webpack version in react js, as above mentioned here, I’m going to use the npm list or yarn list commands....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To remove double quotes from a string in react js, just use the replaceAll('"', '') method it will replace double quotes with an empty string and return a new string without double quotes. Like the following example, let’s take the below sample string example here we will remove all double quotes available in the string. const str = 'Hi" Friend"s, Welcome "to" infinitbility'; // 👇️ 'Hi Friends, Welcome to infinitbility' str....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To remove word from string in react js, just use the replace() method and pass the first parameter word which you want to remove, the second parameter empty string so the method replaces your word with an empty string and returns the new string. The replace() method returns a new string with some or all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function called for each match....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To remove special characters and space from number in javascript, just use replace() method with /[ `!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?~]/g regex then it will return new string without special characters and spaces then convert it number. The replace() method returns a new string with some or all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function called for each match....

Hi Friends 👋, Welcome To Infinitbility! ❤️ To remove special characters and space in javascript, just use replace() method with /[ `!@#$%^&*()_+\-=\[\]{};':"\\|,.<>\/?~]/g regex then it will return new string without special characters and spaces. The replace() method returns a new string with some or all matches of a pattern replaced by a replacement. The pattern can be a string or a RegExp, and the replacement can be a string or a function called for each match....