Given an input file like babel will compile it to but when compiled in loose mode the function call is output as _b.a(); I’ve done some research into where the comma operator is added in the hope there was a comment explaining it. The code responsible for adding it is here. Answer (0, _b.a)() ensures th…
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Interesting array with null elements JavaScript behavior [closed]
Closed. This question needs to be more focused. It is not currently accepting answers. Want to improve this question? Update the question so it focuses on one problem only by editing this post. Closed 7 years ago. Improve this question I found some interesting behavior and I’m wondering why it’s t…
select2 – How to change the value to the first option of the list with jQuery?
I have a form with a select2 dropdown. The dropdown is in a “modal” window and I want to be able to reset my form when the modal is closed. Behaviour wanted: When the modal is opened, I want the default value to be the first option in my select. In this case, the selected value would be A (value
What is making these subnavs expand?
I’m looking at http://voky.com.ua/showcase/sky-mega-menu/examples/demo-personal.html and I can’t figure out what is making the subnavs expand. For example, hover over “Portfolio” and see the subnav expand. I’ve inspected all the elements around the nav items and I can’t fin…
Javascript findIndex is not a function
I have a json array: function to remove a item from json array When the code is running there is an error: findIndex is not a function error line Answer findIndex is not a prototype method of Array in ECMASCRIPT 262, you might need filter combined with indexOf, instead, it has the advantage of stopping search…
How to place Javascript in a separate file from HTML
I have this code placed in index.html, all together – Javascript and HTML. what I want is to place the JS into another, separate file called “pw.js”. I have created a blank JS file located in folder “js”. I have added it to (head) as well like this <script src=”js/pw.js&…
showing error while using JavaScript in JSP with Struts 2
My JSP code: on s:if, JSP shows compile time error when hovering mouse on it (like spell error red line under s:if), shows msg “Syntax error on token “if”, ( expected after this token” although this code works fine. No problem. My questions are: Why it shows error, although it works ? …
Prevent parent page from scrolling when mouse is over embedded iframe in Firefox
…without limiting the scroll inside the iframe or the need to specifically name/tag all scrollable elements. Imagine google maps widget embedded in parent page. When you zoom in the widget you don’t want the parent page to scroll, obviously. I thought an answer to my previous question solved the p…
Please explain to me prototypes in javascript using the code below
I am trying to use the prototype method of writing functions that can be implemented by strings to capitalise every first letter of every word. I would like to call this function like, This is the function I am trying to write: I had written it this way before: Answer I would like to call this function like, …
Null-safe property access (and conditional assignment) in ES6/2015
Is there a null-safe property access (null propagation / existence) operator in ES6 (ES2015/JavaScript.next/Harmony) like ?. in CoffeeScript for example? Or is it planned for ES7? var aThing = …