How does “/\s/g” replace spaces with other characters?
I used that code to replace spaces with another character, but I want to know what that really means. Can somebody please explain to me what that means? Thank you
javascript
Get the last item in an array
Update 13 July 2021 The new at() method allows you to use negative indices to mean “from the end”. You can access the last item of locArray like this: At time of update, the at() method is supported in Chrome 92+, FireFox 90+, Node 16 and Deno 1.12+ Older answer In the event that your server serves the same file for … Read more
How to loop through an array containing objects and access their properties
Use forEach its a built-in array function. Array.forEach():
Check if checkbox is checked with jQuery
IDs must be unique in your document, meaning that you shouldn’t do this: Instead, drop the ID, and then select them by name, or by a containing element: And now the jQuery:
How to read an external local JSON file in JavaScript?
You cannot make a AJAX call to a local resource as the request is made using HTTP. A workaround is to run a local webserver, serve up the file and make the AJAX call to localhost. In terms of helping you write code to read JSON, you should read the documentation for jQuery.getJSON(): http://api.jquery.com/jQuery.getJSON/
TypeError: Router.use() requires middleware function but got a Object
If your are using express above 2.x, you have to declare app.router like below code. Please try to replace your code with Please click here to get more details about app.router Note: app.router is depreciated in express 3.0+. If you are using express 3.0+, refer to Anirudh’s answer below.
How can I add JavaScript inside Blogger?
Navigate to the Layout tab, click the “Add a Page Element” option and select the “HTML/Javascript” sub-option. See the Layout Guide for more details.
document.getElementById vs jQuery $()
Not exactly!! In jQuery, to get the same result as document.getElementById, you can access the jQuery Object and get the first element in the object (Remember JavaScript objects act similar to associative arrays).
What is DOM Event delegation?
Can anyone please explain event delegation in JavaScript and how is it useful?
How to create a GUID / UUID
UUIDs (Universally Unique IDentifier), also known as GUIDs (Globally Unique IDentifier), according to RFC 4122, are identifiers designed to provide certain uniqueness guarantees. While it is possible to implement RFC-compliant UUIDs in a few lines of JavaScript code (e.g., see @broofa’s answer, below) there are several common pitfalls: Invalid id format (UUIDs must be of the form … Read more