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49 items on 13 Nov 2026
JavaScript

I Built a Candle That Burns Down in Real-Time as the Year Passes

Hi everyone! I'm Marcos, an independent digital creator from Venezuela. Today I want to share a small project I built entirely from scratch: a web page where a candle slowly consumes itself second by second, showing…

Source: DEV JavaScript feed Marcos Vargas
JavaScript

How I made every crash pay: the chain timer in Smashy Crossroads

I make Smashy Crossroads: Mega Pileup, a car-crash game about one junction and a lot of rush-hour traffic. You drag back, let go, and try to wreck as many cars as you can in a single launch. It's free, it has no ads,…

Source: DEV JavaScript feed Smashy Crossroads
JavaScript

Agent ready isn't a docs folder. It's a scoreboard.

For 126 nights between March and September, a script at Meta handed the same UI tasks to fresh AI agents four ways (three on some nights): with Meta's open source design system, with that system plus Tailwind, with…

Source: DEV JavaScript feed Ian
JavaScript

Four things Cloudflare's email handler did that I didn't expect

Send one message to two addresses that belong to the same mailbox, and your email() handler runs twice. Same Message-ID, same body, same sender. Only message.to differs. I'm building a small open-source mail app, still…

Source: DEV JavaScript feed Yiğit Tanrıverdi
JavaScript

Vietcombank Exchange Rate API: VND Buy and Sell Rates as JSON

Vietcombank is Vietnam’s largest bank by market value and the reference most Vietnamese price shopping against. It publishes its board as a public file listing a cash buying rate, a transfer buying rate and a selling…

Source: DEV JavaScript feed Exchange Rate API
JavaScript

First Abu Dhabi Bank Exchange Rate API: AED Buy and Sell Rates as JSON

First Abu Dhabi Bank is the largest bank in the UAE by assets, formed from the 2017 merger of National Bank of Abu Dhabi and First Gulf Bank. Its public FX page lists buying and selling rates for about 26 currencies…

Source: DEV JavaScript feed chathuranga basnayaka
JavaScript

Bank of China Exchange Rate API: CNY Buy and Sell Rates as JSON

Bank of China is one of China’s four large state-owned banks and its oldest foreign-exchange bank. Its board lists spot-exchange and cash buy/sell rates plus a middle rate for about 34 currencies, quoted per 100 units…

Source: DEV JavaScript feed Exchange Rate API
JavaScript

Hana Bank Exchange Rate API: KRW Buy and Sell Rates as JSON

Hana Bank, which absorbed Korea Exchange Bank in 2015, is Korea’s largest foreign-exchange bank. It posts numbered notices through the day for about 58 currencies, each with cash, remittance and cheque columns and the…

Source: DEV JavaScript feed chathuranga basnayaka
JavaScript

MUFG Bank Exchange Rate API: JPY Buy and Sell Rates as JSON

MUFG Bank is Japan’s largest bank. Its daily TTS/TTB board, set at about 11:00 Tokyo time and published by the group’s research arm, is the board most Japanese companies take their “TTM” from. It covers about 30…

Source: DEV JavaScript feed allratestoday
JavaScript

Emirates NBD Exchange Rate API: AED Buy and Sell Rates as JSON

Emirates NBD is Dubai’s largest bank and one of the two largest in the country. Its foreign-exchange page publishes customer buy and sell rates for about 36 currencies, refreshed through the day, with a last-updated…

Source: DEV JavaScript feed Exchange Rate API

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