Posts under javascript

Guide on what is not not or double bang (!!) operator in JavaScript and how it can be used to evaluate the truthiness of an expression.

Tutorial on what are JavaScript spread operator and how to use it in React. Also explains about how to use spread operator for arrays and objects

Tutorial on how to fix "SyntaxError: Unexpected token < in JSON at position 0" and "Unexpected end of JSON input" errors in JavaScript and React

Tutorial on different ways to add script to a React component. Examples on methods like adding to the html, adding using useEffect and using react helmet.

Guide on different ways to fill an array in JavaScript with initial values. Also learn how to fill an array with incremental values (1..n)

Guide on using onBlur and onChange events in React for text input. We also discuss how React handles onChange differently than javascript.