I have a list box in the bootstrap modal and a button. When the button is clicked a new button gets rendered inside a div in the modal. When I close the modal and reopen it, the last operation performed on the modal like the button rendered earlier is still present in the modal. How do reset the modal so
Author: admin@master
Create multilingual website with JavaScript and Node.js
I’m creating a web-application and I want to make it possible for the user to choose between 2 or 3 languages. What is the best way of doing this, using HTML, JavaScript and Node.js? Is there a difference in performance when using a client-side or server side solution for this? (Having mobile users in m…
Why does Bootstrap Collapse keep removing the “collapse” class after expanding?
I am using jQuery Collapse on an element that’s inserted via Ajax. When I apply the line below, it removes the collapse class. I need the class to remain so I can call collapse(‘hide’) when the Ajax content needs to be closed. Here’s what I have in my .php file: Here’s what it en…
A Vector Class in Javascript
I’m trying to implement a vector object instantiated like below… …and when I do a math operation I need something like this… …but my code below returns me just an array Please help me out here. Thank you! Answer You need to wrap up your resulting array in a new Vector object: I s…
onYouTubeIframeAPIReady function is not calling
I want to call onYouTubeIframeAPIReady function but this is not firing. I am getting only frameID in console but other functions are not getting called. Answer Your onYouTubeIframeAPIReady() function must be defined globaly. Simply replace the line with It is also important to load the youtube iframe api libr…
In this code, copied from ch 15 of eloquent javascript, what does the keyup event listener do?
In the following code, copied from ch 15 of Eloquent Javascript, how does pressed[codes[event.keyCode]] end up as a boolean value? I just can’t figure out why you need the ‘keyup’ event listener. The idea is to make sure that ‘keydown’ gets registered only once when it is being h…
indexOf() when array-elements are objects (javascript)
For instance, a variable named arrayElements of type array contains: [{id:1, value:5},{id:2, value:6},{id:3, value:7},{id:4, value:8}]. How do I get the position of the array element with id === 3(3rd element) in the arrayElements variable besides using loop? thanks. Answer You have to loop at one point. But …
How to add and remove classes in Javascript without jQuery
I’m looking for a fast and secure way to add and remove classes from an html element without jQuery. It also should be working in early IE (IE8 and up). Answer The following 3 functions work in browsers which don’t support classList: https://jaketrent.com/post/addremove-classes-raw-javascript/
call javascript function onchange event of dropdown list
I want to invoke javascript function when value in the dropdown list changes. I dont want to hardcode dropdown list id . Hence not using document.getElementById My Code: This is giving error ReferenceError: jsFunction is not defined Fiddle : http://jsfiddle.net/6uyz4b8x/1/ Answer Your code is working just fin…
Return certain fields with .populate() from Mongoose
I’m getting returned a JSON value from MongoDB after I run my query. The problem is I do not want to return all the JSON associated with my return, I tried searching the docs and didn’t find a proper way to do this. I was wondering what if it is at possible, and if so what is the proper way