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Why does document.querySelectorAll return a StaticNodeList rather than a real Array?
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I believe it to be a philosophical decision of the W3C. The design of the W3C DOM [spec] is quite orthogonal to the design of JavaScript, as the DOM is meant to be platform and language neutral.
Decisions like "getElementsByFoo(...
HTTP authentication logout via PHP
...that comes from the HTTP specification (section 15.6):
Existing HTTP clients and user agents typically retain authentication
information indefinitely. HTTP/1.1. does not provide a method for a
server to direct clients to discard these cached credentials.
On the other hand, section 10.4...
Setting focus on an HTML input box on page load
... @PeterMortensen when I tested this 9 years ago was on firefox, chrome and ie :)
– Saikios
Jul 1 '19 at 16:34
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Can I change all my http:// links to just //?
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While IE7/8 handles protocol-relative URLs (aka. schemeless URIs) well in most cases, when stylesheets are specified with such URLs, it will download them twice. (So says Steve Souders)
– lucasrizoli
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Trigger a keypress/keydown/keyup event in JS/jQuery?
...nt(el, type){
if ('createEvent' in document) {
// modern browsers, IE9+
var e = document.createEvent('HTMLEvents');
e.initEvent(type, false, true);
el.dispatchEvent(e);
} else {
// IE 8
var e = document.createEventObject();
e.eventType = ty...
How to format numbers by prepending 0 to single-digit numbers?
...y that kind of thing is not needed with this form of formatting in my experience, but I've thrown together an edit that would cover that scenario.
– Joseph Marikle
Nov 26 '11 at 2:09
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Implode an array with JavaScript?
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Array.join is what you need, but if you like, the friendly people at phpjs.org have created implode for you.
Then some slightly off topic ranting. As @jon_darkstar alreadt pointed out, jQuery is JavaScript and not vice versa. You don't need to know JavaScript to be able to un...
text-overflow: ellipsis not working
This is what I tried (see here ):
11 Answers
11
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CSS Selector that applies to elements with two classes
...ent(s) with foo AND bar classes */
}
If you still have to deal with ancient browsers like IE6, be aware that it doesn't read chained class selectors correctly: it'll only read the last class selector (.bar in this case) instead, regardless of what other classes you list.
To illustrate how other...
App Inventor 2 向心力实验App - 探究向心力F与角速度ω、半径r、质量m的关...
...加速度传感器文档
- App Inventor 陀螺仪传感器文档
文档版本：2026.05 | 作者：App Inventor 2 中文网 www.fun123.cn
原文来源：MIT App Inventor 官方文档 | MIT App Inventor GitHub
MIT App Inventor 官方文档采用 CC BY-SA 4.0 授权。本文档由 ai2claw 整理...