Topics, Question and Answers

All Web Topics English Kinyarwanda French

Question

155 Why is Bulma framework good choice for Javascript developers?

I've seen many JavaScript Projects built with vanilla JavaScript, Libraries like Reactjs or frameworks like Vuejs with Bulma framework for CSS and made me thinking, the taste behi...More

Bulma Bootstrap Javascript Reactjs Front-End

Question

146 What are scripts don't block DOMContentLoaded event?

A document is loaded and DOMContentLoaded is handled/run after everything in script tag is done, but are there some scripts which can't prevent a document from loading ? How many o...More

DOMContentLoad+ DOM events Async attribut+

Question

134 How to make selectable list over items like folder in file-managers?

I have more than 50 list elements which are in unordered list and I want the following action to happen: If user clicks on element highlight it with blue color.

If it...More

List item Selectable

Question

132 What's the logic behind (auto-saved draft) using Javascript codes?

I mostly use Q&A sites such as Stackoverflow, Quora, when I'm interacting with form by adding some data in their input box, textarea, etc. sometimes I leave the site unexpectedly b...More

Autosaved draf+ Session in Jav+

Question

131 How to handle and gather webpage data after user leaves a site in Javascript?

I am adding some interactive features to my webpage with Javascript but I want to collect the data about how each page is accessed and used by site visitors (for analytical reasons...More

Unload event Window event DOM events

Question

130 What's the logic behind Drag n' Drop algorithm using Javascript?

I always wonder what's going on under the hood when I take a photo, document file or multiple folders or files and I drag from some place and paste it anywhere. With dev ideas,...More

Drag and Drop Drag file Mouse Events Pointer events File upload

Question

126 How to make editable div or paragraph by double clicking?

I want to make a simple div which has to become editable when a user double-clicks on it. I wish div to turn into element like text field with cursor to the text where double-click...More

Javascript Editable Text Editable div Double click Events DOM events

Question

125 How to make elements like div, table and span support focus/blur?

Since we know that elements such as input, button and select support focus/blur how can I make other elements like div, b, ul and span to accept blur and being focuseable? ...More

Focus event Blur event Tabindex

Question

124 Whats the effects of shortening form.elements.name to form.name?

I am working with many forms in single page but I'd prefer using short notation form.name instead of form.elements.name Is there any issues if I keep shortening?

Form events DOM events

Question

123 How do default actions work in browser - How to prevent them?

I'm currently learning how to handle events, in that case There are some events and actions behave unexpectedly which force me to understand deeply how do browser default actions w...More

Default action preventDefault

Question

122 How to disable copy-paste option using javascript?

I upload code on my blogging site but I don't want page viewers to copy it. Instead, I want them to download source code, Therefore I need a simple way to disable copy option on co...More

Copy Oncopy DOM event

Question

121 How can I prevent text selection on Mousedown event?

I'm having trouble in dealing with mouse events, because when I double-click on span element it selects text but thats not what I want. Here is my simple program: <div...More

Mouse Events Mousedown UI Event

Question

120 Are events mouseenter, mouseleave similar to mouseover/mouseout?

I am self-taught js developer but I can't understand mouse events perfectly since it confuses me when it come to practice, I can't be able to choose which event to react on some mo...More

Javascript Mouse Events Mouseover Mouseenter Mouseleave Bubbling

Question

118 How can you call async from non-async function?

I am praticing async and await but It comes to where I want to call async from non-async but this simple program has me completely stuck. Actually I am developer who are new to asy...More

Async Await Promise Asynchronous Async in Javas+ ES6

Question

115 How comes (Microtask queue) while using Promises in js?

What is microtask queue while handling Promise, Where and when is it mostly used? I am unable to manage many asynchronous tasks with Promises

Promise Microtask Task Queue Promise handle+ ES8

Question

114 Why some events don't bubble in javascript? need example

I'm currently learning Browser events, and find many events bubble. I can't understand why other events don't do bubble, How to know if event bubbles?

Javascript Bubbling Capturing Javascript eve+ DOM element

Question

113 What is eval function in javascript - Where is it used?

I know less about eval function and heard some javascript developers saying that it should not be used in modern code, because it can perform unexpected things in your code since ...More

Eval function Javascript fun+ Miscellaneous Old javascript

Question

112 How many ways to assign event handlers in javascript?

I want to react on events but I can assign a handler only with HTML attribute, like this and I am asking: Are there many other ways to help mw with that so I can try best way suits my needs?

Browser Event Events in Java+ Javascript Event Handler

Question

110 Do I need python if I know C++, C#, Javascript , R and Php

I am programmer who mastered C# and C++, Javascript, R(for data science) and Php(backend) in all my projects and I'm advising developers if Its a must to learn Python too earlier....More

C# C++ Python Javascript Php R programming In-demand prog+

Question

60 Many developers won't move from Javascript to Typescript

It's usual that some programming languages come and go/die/ or people leave and replace them with new one, what will happen to javascript world if Typescript goes on better than it...More

Programmers Javascript Typescript Js Ts

Question

56 Can I use Deno or Node.js if I don't know much javascript?

I want to know if it is easy to learn deno as my back-end language without having basics skills in Typescript, It It can't be easy. I need developer tips that i should follow in or...More

Deno Nodejs Javascript Typescript BackEnd Develo+ Backend develo+ Backend progra+

Question

34 How to use moment.js in javascript

I am developing website which will be used grobally, And Want the approach which can help me to manage date and time for each user according to country timezones

Javascript Time and Date Local Time Timezone Moment.js

1 •Next