What does the !! (double exclamation mark) operator do in JavaScript . . . Novice JavaScript developers need to know that the "not not" operator is using implicitly the original loose comparison method instead of the exact === or !== operators and also the hidden cast operation that is happening behind the scenes and I show it in the example I provide
What is the correct way to check for string equality in JavaScript . . . In all other cases, you're safe to use == Not only is it safe, but in many cases it simplifies your code in a way that improves readability I still recommend Crockford's talk for developers who don't want to invest the time to really understand Javascript—it's good advice for a developer who only occasionally works in Javascript
How to reload a page using JavaScript - Stack Overflow Here is the explanation JavaScript window location object can be used to get current page address (URL) to redirect the browser to another page to reload the same page window: in JavaScript represents an open window in a browser location: in JavaScript holds information about current URL
javascript - How do I replace all occurrences of a string . . . - Stack . . . Note: In general, extending the built-in prototypes in JavaScript is generally not recommended I am providing as extensions on the String prototype simply for purposes of illustration, showing different implementations of a hypothetical standard method on the String built-in prototype