大约有 9,000 项符合查询结果（耗时：0.0284秒） [XML]
How to check if element has any children in Javascript?
... opposed to text nodes, attribute nodes, etc.) on all modern browsers (and IE8 — in fact, even IE6) you can do this: (thank you Florian!)
if (element.children.length > 0) { // Or just `if (element.children.length)`
// It has at least one element as a child
}
That relies on the children ...
Is there any downside for using a leading double slash to inherit the protocol in a URL? i.e. src=“/
...
is this supported on all major browsers? (IE7, IE8, FF, Chrome, Safari)
– Rob Volk
Jan 12 '11 at 23:11
22
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How to dynamically create CSS class in JavaScript and apply?
...swered Nov 12 '09 at 7:18
I.devriesI.devries
7,35911 gold badge2424 silver badges2929 bronze badges
...
How can I upload files asynchronously?
... I have the file part working ... but can you include text fields in this as well? This doesn't seem to with var formData = new FormData($('form')[0]); or serialize() ?
– Dan
Jun 5 '12 at 4:26
...
Get the size of the screen, current web page and browser window
...n get the size of the window or document with jQuery:
// Size of browser viewport.
$(window).height();
$(window).width();
// Size of HTML document (same as pageHeight/pageWidth in screenshot).
$(document).height();
$(document).width();
For screen size you can use the screen object:
window.scree...
100% Min Height CSS layout
...-height of 100%. That
way, if the content requires more height than the viewport provides,
the height of #content forces #container to become longer as well.
Possible columns in #content can then be visualised with a background
image on #container; divs are not table cells, and you don't nee...
How to detect pressing Enter on keyboard using jQuery?
...I read this and left scratching my head over why keypress didn't work with IE. (it won't bind to $(window) under IE) quirksmode.org/dom/events/keys.html
– Incognito
Mar 2 '11 at 16:49
...
HTML/CSS: Making two floating divs the same height
...v that has overflow hidden. Vertically centering the text is a little trickier but this should help you on the way.
#container {
overflow: hidden;
width: 100%;
}
#left-col {
float: left;
width: 50%;
background-color: orange;
padding-bottom: 500em;
margin-bottom: -500e...
Should I use s and s inside my s?
... possible backwards compatibility blunders with browsers such as Opera and IE.
– acconrad
Apr 4 '11 at 22:13
...
addEventListener vs onclick
...loper chose to use both approaches.
Event Listeners (addEventListener and IE's attachEvent)
Earlier versions of Internet Explorer implement javascript differently from pretty much every other browser. With versions less than 9, you use the attachEvent[doc] method, like this:
element.attachEvent...