JavaScript

Topic	Replies	Views	Activity
Remove duplication to improve code tutorial In a recent thread about validating form fields, I noticed a lot of duplication in the code, and that duplication has been making it tricky for people to examine the code. This thread is dedicated to exploring how to eff…	49	13340	August 4, 2021
Converting jQuery to vanilla JavaScript, a step by step guide Frequently I see on here people asking to deal with jQuery, for example with converting it to vanilla JavaScript. As a result I thought that I’d provide a worked example of converting code from jQuery to vanilla JavaScr…	14	15261	July 16, 2020
An introduction to debugging code Recently while helping someone make improvements to an SVG shape editor being developed on JSFiddle, we were setting the currently active shape with a thicker stroke. That worked when one of the Stroke input fields was a…	2	14519	April 26, 2018
Could someone please help check my url string to page output code is safe?	18	148	October 31, 2025
Permission issue when accessing page content in a Firefox extension scripts	3	75	October 29, 2025
What’s the best language to focus on in 2025 — TypeScript or JavaScript? javascript , typescript	16	270	October 22, 2025
Need to access all but current button in a grid array of buttons scripts	29	330	October 29, 2025
TinyMCE 8 with Line Number Language and Copy Button	4	107	October 16, 2025
Where to Begin	51	518	October 17, 2025
A javascript graph function works on wamp server but won't work on hosting server	3	103	October 8, 2025
How to whitelist wildcard subdomains for Google reCAPTCHA v3 in a multi-tenant app? security	1	90	October 6, 2025
D3.js zoom translateExtent not returning to 0 graphics	1	98	October 24, 2025
Unable to click onto form elements in modal javascript , bootstrap , css , react	2	86	October 4, 2025
How exactly is the mouseover page preview on Wikipedia done?	3	120	October 4, 2025
Npm run dev	9	89	October 4, 2025
Check if file exists javascript	8	132	October 1, 2025
Where Does JavaScript Run	6	158	September 19, 2025
Submit a form with react	2	182	September 3, 2025
Selecting sub-menu items	14	283	August 29, 2025
I want to know Best Way to Manage Component State Without Going Overboard?	2	279	August 8, 2025
Cropper js - Cropper grid issue - Help please!	9	609	August 8, 2025
Cache Plugin Causes Click Issue After Activation	4	148	August 3, 2025
How do I fix “undefined” or “null” errors in JavaScript?	2	67	August 1, 2025
Have you ever chosen Node.js over PHP, and if so, why? php , nodejs	16	552	July 25, 2025
Learning react	6	352	July 24, 2025
Changing value inside text field based on body class>?	10	402	July 18, 2025
Making the drag and drop work in modified version	25	488	July 16, 2025
JavaScript not asking permission to use camera	43	899	July 12, 2025
Paypal Transaction Refused	2	184	July 10, 2025
No easier Node.js method of HTML includes than this? php , nodejs , php-include	7	196	July 4, 2025

Remove duplication to improve code

tutorial

In a recent thread about validating form fields, I noticed a lot of duplication in the code, and that duplication has been making it tricky for people to examine the code. This thread is dedicated to exploring how to eff…

49

13340

August 4, 2021

Converting jQuery to vanilla JavaScript, a step by step guide

Frequently I see on here people asking to deal with jQuery, for example with converting it to vanilla JavaScript. As a result I thought that I’d provide a worked example of converting code from jQuery to vanilla JavaScr…

14

15261

July 16, 2020

An introduction to debugging code

Recently while helping someone make improvements to an SVG shape editor being developed on JSFiddle, we were setting the currently active shape with a thicker stroke. That worked when one of the Stroke input fields was a…

2

14519

April 26, 2018

Could someone please help check my url string to page output code is safe?