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Browsing Tag

javascript

55 posts

SyntaxError: Support for the experimental syntax jsx isn’t currently enabled

  • Akash Mittal
  • September 15, 2022
JavaScript throws error “Support for the experimental syntax ‘jsx’ isn’t currently enabled” when either babel is not configured properly or there is script tag in JS file. In this article…
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JavaScript TypeError: “xyz” is not a function – Code Example

  • Akash Mittal
  • September 11, 2022
JavaScript throws TypeError: something is not a function when you try to call a non-function entity with (). For example, if there is a variable x = 5 then if…
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JavaScript SyntaxError: Unexpected token – Code Example

  • Akash Mittal
  • September 10, 2022
SyntaxError is raised by nearly all programming languages. The main cause is the issue with standard language construct. In this article we will discuss about the Unexpected token error of…
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What is difference between var, let & const in JavaScript? Code Example

  • Akash Mittal
  • September 8, 2022
var, let & const are the three javascript keywords which are used to define the properties of a variable. Based on the restrictiveness on variable, we choose one of these…
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How to get ip address of any website using JS & nodejs? Code Example

  • Akash Mittal
  • September 8, 2022
Nodejs provides node:dns module which can be used to fetch DNS information of any website or host. In this article we will check out a code example to get ip…
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How to create SHA256 password hash using NodeJS? Code Examples

  • Akash Mittal
  • September 8, 2022
In order to create SHA256 password hash using NodeJS, we can use node:crypto module. It has a createHmac() function which accepts the algorithm and secret key as parameters. Then we…
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How to check JavaScript version on Google Chrome?

  • Akash Mittal
  • September 8, 2022
One day I was wondering what version of JavaScript is running in my Chrome browser? I tried searching in settings but couldn’t find any reference. Today I will show you…
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How to append to string and DOM elements in JavaScript? Code Example

  • Akash Mittal
  • September 7, 2022
In this article we will learn how to append to string and DOM elements in JavaScript. JavaScript is a unique language. It can do what no other language can do…
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TypeError: Cannot read properties of undefined (‘FLAGS’) – Code Example

  • Akash Mittal
  • August 30, 2022
In Discord.js v14, Intent is deprecated. If you try to use Intents.FLAGS.GUILDS then it will raise TypeError: Cannot read properties of undefined (reading ‘FLAGS’). Instead you will need to use…
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web scraping of static and dynamic websites using reactjs nodejs and nightmarejs
  • JavaScript
  • React Js

    Web Scraping dynamic & static websites in Nodejs and Reactjs

    • Teresia Wachira
    • September 5, 2022
    Introduction Web scraping is a technique used for extracting data from websites. And a piece of code or software that helps you to scrape data is known as a scraper.…
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    typeof variable == “boolean” Check if type is boolean – Code Example

    • Akash Mittal
    • August 30, 2022
    In order to check if type of variable is boolean you can use typeof variable == “boolean”. If it is object then you may use toString.call(obj) === ‘[object Boolean]’. Code…
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    syntaxerror: cannot use import statement outside module – Code Example

    • Akash Mittal
    • August 30, 2022
    Here is the solution for syntaxerror: cannot use import statement outside a module – 1. Add this to package.json – 2. Or, use type=module in <script> tag – Other issues…
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    domexception: failed to load because no supported source was found

    • Akash Mittal
    • August 14, 2022
    Browsers like Chrome throws uncaught (in promise) domexception: failed to load because no supported source was found when it is not able to load audio files from url. This sometimes…
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    uncaught (in promise) DOMexception – Code Example

    • Akash Mittal
    • August 30, 2022
    uncaught (in promise) DOMexception is raised by browsers when something wrong is there in DOM and exception is thrown but there is no function to catch it. It is generally…
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    Javascript reduce() method – Code Example

    • Akash Mittal
    • August 30, 2022
    In this article we will show you few code example on how to use Javasript reduce() method. It is used to run a function over all the elements of the…
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    how to compare two arrays in javascript – Code Example

    • Akash Mittal
    • August 30, 2022
    In this article we will provide you code to compare two arrays in javascript. Arrays are sequential in nature. In order to compare them, we need to make sure that…
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    [Code Error] RangeError: toString() radix argument between 2 and 36

    • Akash Mittal
    • August 3, 2022
    Get code to resolve the RangeError: toString() radix argument must be between 2 and 36. Radix in parseInt() or toString() cannot be less than 2 and greater than 36. This…
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    SyntaxErr: Not legal ECMA-262 octal constant JavaScript – Code Example

    • Akash Mittal
    • August 30, 2022
    In this article we will learn with code example, how to resolve SyntaxError: number is not a legal ECMA-262 octal constant. Octal numbers are in the range 0-7. Any number…
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    comparison function must either function or undefined JS – Code Example

    • Akash Mittal
    • August 30, 2022
    In this article we will show you the code to resolve TypeError: The comparison function must be either a function or undefined. It is raised if you provide wrong arguments…
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    file assigned sourcemappingurl, but already has one JS – Code Example

    • Akash Mittal
    • August 30, 2022
    In this article we will show you the code to resolve the warning -file- is being assigned a //# sourceMappingURL, but already has one. This is generally raised when there…
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