Javascript replace character in a string at index or with regular expression using the string replace() function which is used to replace the first occurrence of value in a string. To use the same function to replace all the instances of a character, you can use a regular expression with the (g) flag or modifier set. The syntax is string.replace(searchValue,…
Python web scraping class will teach you how to get inner and nested divs using beautifulsoup. You can use BeautifulSoup to scrap or get the text inside nested div tags and take further operation with the text or the result you will get after the scrapping is done. Without wasting your time, let me quickly show you the problem and…
Interfaces in Java what is an interface in java? Java interface is termed as a complete abstract type used to specify the behavior of a class. Interface is just like an abstract class, the difference is that, whiles abstract class can have non-abstract methods, all methods in interface are abstract, therefore it used to achieve total abstraction. It provides full…
The python error “PermissionError: [Errno 13] Permission denied” can be fixed in various ways after knowing the root cause. This error mainly occurs through the open method which is used to open and read file. For example, if the path passed into the open() method as an argument is not a file, python will throw an error. Also, if you…
The Swift error “type of expression is ambiguous without more context” occurs when you try to update your project to the latest version of Swift or XCode to 7.0.1+ from version 6.4. The compiler will throw this error letting you know that there’s something wrong somewhere in your code. Also, you have to be specific enough to help the compiler…
The “Uncaught syntaxerror: Cannot use import statement outside a module” occurs in JavaScript and Typescript when you apply the ES6 Modules concept/syntax in a particular script that’s not loaded as a local or third-party module. This happens as a result of importing ECMAScript 6 that is exported as a function or a class in a different file. Also, when linking…
Let solve the React.js “uncaught error: objects are not valid as a React child (found object with keys_u_v_w_w) if you meant to render a collection of children, use an array instead.” The first approach to any problem is to identify the root cause, so let me show you the reason why this error occurs and then we will proceed with…
This error “sh: react-scripts: command not found error command failed with exit code 127” mostly occurs when you clone a new repository of react.js application. When you try to run the application with the following commands you will surely encounters it because of no existing node-modules directory. You will also experience the above error if you accidentally type the react…
The JavaScript “forEach is not a function” error occurs when you call the method ‘forEach()’ on a variable or property that’s not of type array, ‘set’ or ‘Map’ object. Because JavaScript is not a statically type programming-language, you will encounter this error often when developing a JavaScript web application. If you call an array method on a string for example,…
To solve the “error: cannot find module in Node.js or express” you have to first know why this error occurs. Mostly, this error occurs when you’re going through a Node.js tutorial and you reach a point where you need to install some specific module, package or a library. If you don’t properly install it using the npm install command and…