AJAX

I

PHP Intermediate

Instant Search Done Right: Debounce, Abort, Escape, Limit

Search-as-you-type touches four failure modes at once - request spam, stale responses, LIKE wildcards and unbounded scans. The complete pattern, both sides of the wire.

May 26, 2026 3 min 419 Read →

F

PHP Intermediate

file_get_contents Is a Full HTTP Client (Timeouts, POST and All)

No cURL, no Guzzle, no problem: stream contexts give file_get_contents methods, headers, bodies, timeouts - plus a magic variable that captures response headers.

Feb 26, 2026 2 min 779 Read →

N

JavaScript Intermediate

navigator.onLine Lies - Build Offline Detection That Doesn't

onLine only knows if there is a network interface, not whether the internet works. Real offline handling means verified checks and a retry queue for failed writes.

May 5, 2025 2 min 1,818 Read →

F

JavaScript Intermediate

fetch() With a Deadline: AbortSignal.timeout and Friends

fetch waits forever by default. One static method gives every request a timeout, and combining signals cancels stale searches the moment the user keeps typing.

Apr 4, 2025 2 min 1,974 Read →

F

JavaScript Advanced

for await...of: Paginated APIs as a Simple Loop

Async generators hide the pagination bookkeeping - cursors, hasMore flags, page counters - behind a clean loop that fetches pages only as you consume them.

Jan 22, 2025 2 min 1,694 Read →

P

JavaScript Intermediate

Promise.allSettled, any, race: Picking the Right Combinator

Promise.all fails everything when one request dies - usually not what a dashboard wants. The other three combinators cover the cases all() gets wrong.

Jan 13, 2025 2 min 641 Read →

A

PHP Intermediate

A Real Upload Progress Bar with XMLHttpRequest and PHP

fetch() still cannot report upload progress reliably - but XMLHttpRequest has done it for fifteen years. The full pattern: progress events, a PHP receiver, and the config limits that silently break big uploads.

Dec 8, 2024 2 min 2,966 Read →

O

jQuery Intermediate

One Global Spinner for Every AJAX Call

Stop wiring loading states into every request. jQuery broadcasts global AJAX lifecycle events, and $.ajaxSetup injects headers everywhere - CSRF tokens included.

Nov 29, 2024 2 min 3,591 Read →

W

JavaScript Beginner

Why Your Click Handlers Die After AJAX (and the One-Line Fix)

Buttons work until the list refreshes over AJAX, then silently stop. Delegated events fix it permanently - and the same pattern is two lines in vanilla JS.

Nov 19, 2024 2 min 2,472 Read →

R

PHP Advanced

Real-Time Updates with Plain PHP: Server-Sent Events

WebSockets need infrastructure. Polling hammers your server. SSE streams live updates over normal HTTP with a PHP file and the built-in EventSource API - reconnection included.

Nov 10, 2024 2 min 1,925 Read →

T

PHP Advanced

The PHP Session Lock That's Serializing Your AJAX Calls

Fire five parallel AJAX requests at a PHP backend and watch them execute one... at... a... time. The culprit is the session file lock, and the fix is a single function call.

Sep 5, 2024 2 min 762 Read →

S

JavaScript Beginner

Serialize an Entire Form in One Line with FormData

new FormData(form) reads every field in one call, posts natively with fetch, and Object.fromEntries turns it into JSON. You may never write form.elements loops again.

Apr 25, 2024 2 min 3,311 Read →