JavaScript? ??? ??? ???? ??
??: ???? ??? ??? ???? JavaScript ???? ???? ??? ?? ???? ??? ??? ???? ?? ??? ?????. ????
??:
? ??????? ??? ? ?? ???? ?? ?????? ??? ??? ???? ???? ?? ?????. ??? ???? ???? ??? ?? ?? ? ????.
- ??? ??? ??? ??: ??? ? ?? ??(?: ? ?????)? ???? ?????.
- ?? ?? ??: ??? ??? ???? ? ??? ??? ?????(?: onload ??? ???).
- ?? ??: ??? ?? ??? ??? ?? ???? ??? ?? ??? ??? ?????.
?:
?? JavaScript ??? ????:
// Image address and file size (in bytes)
var imageAddr = "https://large-image-url";
var downloadSize = 7300000;
// Function to show progress messages
function ShowProgressMessage(msg) {
// Display messages in the console and a UI element
}
// Function to initiate speed detection
function InitiateSpeedDetection() {
ShowProgressMessage("Loading image...");
window.setTimeout(MeasureConnectionSpeed, 1);
}
if (window.addEventListener) {
window.addEventListener('load', InitiateSpeedDetection, false);
} else if (window.attachEvent) {
window.attachEvent('onload', InitiateSpeedDetection);
}
// Function to measure connection speed
function MeasureConnectionSpeed() {
var startTime, endTime;
var download = new Image();
// Event listeners for load and error
download.onload = showResults;
download.onerror = function (err, msg) {
ShowProgressMessage("Invalid image or error downloading");
};
startTime = (new Date()).getTime();
var cacheBuster = "?nnn=" + startTime;
download.src = imageAddr + cacheBuster;
// Function to show speed results
function showResults() {
endTime = (new Date()).getTime();
var duration = (endTime - startTime) / 1000;
var bitsLoaded = downloadSize * 8;
var speedBps = (bitsLoaded / duration).toFixed(2);
var speedKbps = (speedBps / 1024).toFixed(2);
var speedMbps = (speedKbps / 1024).toFixed(2);
ShowProgressMessage([
"Your connection speed is:",
speedBps + " bps",
speedKbps + " kbps",
speedMbps + " Mbps"
]);
}
}
??:
- ???? ?? ? ?? ???? ?? ?? ??? ?? ???? ?? ? ????.
- ? ??? ?? ????? ???? ??? ? ?? ?? ??? ????? ? ???.
? ??? JavaScript? ???? ??? ??? ??? ??? ? ????? ?? ?????. ??? ??? PHP ??? ????? ?? ?? ??? ?????!
? AI ??
Undress AI Tool
??? ???? ??
Undresser.AI Undress
???? ?? ??? ??? ?? AI ?? ?
AI Clothes Remover
???? ?? ???? ??? AI ?????.
Clothoff.io
AI ? ???
Video Face Swap
??? ??? AI ?? ?? ??? ???? ?? ???? ??? ?? ????!
?? ??
??? ??
???++7.3.1
???? ?? ?? ?? ???
SublimeText3 ??? ??
??? ??, ???? ?? ????.
???? 13.0.1 ???
??? PHP ?? ?? ??
???? CS6
??? ? ?? ??
SublimeText3 Mac ??
? ??? ?? ?? ?????(SublimeText3)
??? ??
8639
17
1786
16
1729
56
1581
29
1446
31
Java vs. JavaScript : ??? ?????
Jun 20, 2025 am 12:27 AM
Java ? JavaScript? ?? ?? ????? ??? ?? ?? ?? ???? ????? ?????. Java? ??? ? ??? ?????? ??? ???? JavaScript? ?? ? ??? ??? ?????.
JavaScript ?? : ?? ??
Jun 19, 2025 am 12:40 AM
JavaScriptCommentsareEnsentialformaining, ?? ? ???? 1) Single-LinecommentsERUSEDFORQUICKEXPLANATIONS.2) Multi-linecommentSexplaincleClexLogicOrprovidedEdeDDocumentation.3) inlineecommentsClarifySpecificPartSofcode.bestPractic
JS? ??? ???? ???? ???
Jul 01, 2025 am 01:27 AM
JavaScript?? ??? ??? ?? ? ? ?? ??? ???????. 1. ?? ??? ??? ???? ?? ??? ????. ISO ?? ???? ???? ???? ???? ?? ????. 2. ?? ??? ?? ???? ??? ?? ???? ??? ? ??? ? ?? 0?? ????? ?? ??????. 3. ?? ?? ???? ???? ???? ?? ?????? ??? ? ????. 4. Luxon? ?? ???? ???? ?????? ???? ?? ????. ??? ?? ???? ????? ???? ??? ????? ?? ? ????.
? ? ??? ??? ?? ???? ??? ??????
Jul 02, 2025 am 01:22 AM
TAGGSATTHEBOTTOMOFABLOGPOSTORWEBPAGESERVESPRACTICALPURSEO, USEREXPERIENCE, andDESIGN.1.ITHELPSWITHEOBYOWNSESPORENGENSTOESTOCESKESKERKESKERKERKERDER-RELEVANTTAGSWITHOUTHINGTEMAINCONTENT.2.ITIMPROVESEREXPERKEEPINGTOPONTEFOCUSOFOFOFOCUSOFOFOFOCUCUSONTHEATECLL
JavaScript vs. Java : ?????? ??? ? ??
Jun 20, 2025 am 12:21 AM
JavaScriptIspreferredforwebDevelopment, whithjavaisbetterforlarge-scalebackendsystemsandandandoidapps.1) javascriptexcelsincreatinginteractivewebexperiences withitsdynatureanddommanipulation.2) javaoffersstrongtypingandobject-Orientededededededededededededededededdec
DOM?? ??? ?? ? ? ??? ??????
Jul 02, 2025 am 01:19 AM
??? ?? ? ??? DOM?? ??? ??? ? ?????. ??? ?? ????? ?? ??????, ??? ?? ???? ?? ????????. 1. ??? ??? addeventListener? usecapture ?? ??? true? ???? ?????. 2. ??? ??? ?? ???? usecapture? ???? ????? ?????. 3. ??? ??? ??? ??? ???? ? ??? ? ????. 4. ??? ?? ?? ?? ??? ?? ??? ??????? ??? ???? ?????. 5. ??? ?? ?? ?? ??? ?? ???? ?? ???? ? ??? ? ????. ? ? ??? ???? ???? JavaScript? ??? ??? ??? ????? ???? ???? ??? ??????.
JavaScript : ???? ????? ??? ?? ??
Jun 20, 2025 am 12:46 AM
javascriptassevenfundamentalDatatatypes : ??, ???, ??, unull, ??, ? symbol.1) ?? seAdouble-precisionformat, ??? forwidevaluerangesbutbecautiouswithfatingfointarithmetic.2) stringsareimmutable, useefficientconcatenationmethendsf
JavaScript ?? ????? ???? ??? ??? ?? ? ?????
Jun 26, 2025 am 12:54 AM
JavaScript ?? ????? ??????? ??? ?? ??? ??? ????? ?? ??? ????. ????? ??? ?????. 1. ?? ?? (CodesPlitting) ??, ?? ??? React.lazy ()? ?? ?? ?? ?? ??? ????? ??? ???? ? ?? ????? ??? ?? ??? ???????. 2. ???? ?? ?? (???)? ????, ES6 ?? ????? ???? "Dead Code"? ???? ?? ? ????? ?? ??? ??? ? ???????. 3. ?? ??? ???? ???? GZIP/BROTLI ? TERSER? JS? ???? ??? ????? ???? ?? ???? ??? ? ? ??????. 4. ??? ???? ???? day.js ? fetch? ?? ?? ?????? ??????.
