position

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm trying to use the :before selector to place an image over another image, but I'm finding that it simply doesn't work to place an image before an img element, only some other element. Specifically, my styles are: .container { position: relative; display: block; } .overlay:before { content: url(images/[someimage].png); position: absolute; left:-20px; top: -20px; } and I find that this works fine: but this does not: I can use a div or p element instead of that span , and the browser correctly overlays my image over the image in the img

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I just came across a neat CSS trick. Check out the fiddle... .tooltiptail { display: block; border-color: #ffffff #a0c7ff #ffffff #ffffff; border-style: solid; border-width: 20px; width: 0px; height: 0px; } .anothertail { background-image: url(http://static.jqueryfordesigners.com/demo/images/coda/bubble-tail2.png); display: block; height: 29px; width: 30px; } Cool Trick: How do I get this effect with only CSS? This creates a little arrow/triangle-like effect, a "tooltip tail". This blows my mind! I'm really interested in knowing how this

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: 回答1: You can traverse the offsetParent up to the top level of the DOM. function getOffsetLeft( elem ) { var offsetLeft = 0; do { if ( !isNaN( elem.offsetLeft ) ) { offsetLeft += elem.offsetLeft; } } while( elem = elem.offsetParent ); return offsetLeft; } 回答2: You can get top and left without traversing DOM like this: function getCoords(elem) { // crossbrowser version var box = elem.getBoundingClientRect(); var body = document.body; var docEl = document.documentElement; var scrollTop = window.pageYOffset || docEl.scrollTop || body.scrollTop;

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I've spent 2 hours on this crazy bug on one of my websites which has huge amount of content, until I figured what was causing the issue; On Chrome it appears that position:fixed element inside a position:absolute element (which has a z-index) would not work like a position:fixed element would. Note - only on Chrome windows (not on ubuntu). I want to post this question and my answer so others won't get frustrated from Chrome and it's crazy bugs. see demo: TEST PAGE: http://jsbin.com/uhuzoy/2/edit 回答1: FIX : add these rules to the position

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to get the users geolocation via the html5 geolcation api, and i use the following snippet for it: if (navigator.geolocation) { var timeoutVal = 10 * 1000 * 1000; navigator.geolocation.getCurrentPosition( displayPosition, displayError, { enableHighAccuracy: true, timeout: timeoutVal, maximumAge: 0 } ); } else { // DO SOME STUFF HERE } function displayPosition(position) { // configuration var myZoom = 12; var myMarkerIsDraggable = true; var myCoordsLenght = 6; var defaultLat = position.coords.latitude; var defaultLng = position

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I am trying to make a bar graph where the largest bar would be nearest to the y axis and the shortest bar would be furthest. So this is kind of like the Table I have Name Position 1 James Goalkeeper 2 Frank Goalkeeper 3 Jean Defense 4 Steve Defense 5 John Defense 6 Tim Striker So I am trying to build a bar graph that would show the number of players according to position p but the graph shows the goalkeeper bar first then the defense, and finally the striker one. I would want the graph to be ordered so that the defense bar is closest to the

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: Before iOS 10 came out I was using the following code to get the video and audio capture for my video recorder: for device in AVCaptureDevice . devices () { if ( device as AnyObject ). hasMediaType ( AVMediaTypeAudio ) { self . audioCapture = device as ? AVCaptureDevice } else if ( device as AnyObject ). hasMediaType ( AVMediaTypeVideo ) { if ( device as AnyObject ). position == AVCaptureDevicePosition . back { self . backCameraVideoCapture = device as ? AVCaptureDevice } else { self . frontCameraVideoCapture = device as ?

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I have ListView with my own layout and CustomCursorAdapter. Every row has it's own checkbox. So... it's absolutely clear that during sroll the checkboxes loose their states. The only stuff I found is Android save Checkbox State in ListView with Cursor Adapter but there is no answer there. And one more question. I had the same problem with my CustorArrayAdapter. I solved that problem using SparseBooleanArray to keep checkboxes states. It works fine, but every scroll calls onCheckedChanged. That's normal? The deal is my list view describes

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 问题: I'm 90% sure there is a built in function that does this. I need to find the position of a character in an alphabet. So the character "b" is position 1 (counting from 0), etc. Does anyone know what the function is called? Thanks in advance! EDIT: What i'm trying to do is to send all the characters X amount of "steps" back in the alpha bet, so if i have a string with "hi" it would be "gh" if i sent it back one step. There might be a better way of doing it, any tips? 回答1: It is called index . For e.g. >>> import string >>> string.lowercase

可以将文章内容翻译成中文,广告屏蔽插件可能会导致该功能失效(如失效，请关闭广告屏蔽插件后再试): 由 翻译 强力驱动 问题: I am using bootstrap 3 thumbnail as follows: Robots ! Lorem ipsum dolor sit amet I want the caption to overlay on image but the way being done on Mashable.com I have tried following but no luck :(( . post - content { background : none repeat scroll 0 0 #FFFFFF; opacity : 0.5 ; margin : - 54px 20px 12px ; position : relative ; } How can i overlay a caption div on top of image but just like Mashable.com ? This works but I want it centered just like mashable. and centered for every image. for some images, it is not centered. 回答1: You