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File input 'accept' attribute - is it useful?
...
I needed to accept JPG, PNG, GIF, PDF, and EPS files, but accept='.jpg,.png,.gif,.pdf,.eps' didn't allow any selection. I tried many variations - space delimited, no dot characters, etc., but no dice in Chrome v20, so I ended up using the mime types and it wo...
数据科学组件 · App Inventor 2 中文网
...可，不得转载或使用 隐私策略和使用条款 技术支持 service@fun123.cn
list every font a user's browser can display
...n get separated
var testString = "mmmmmmmmmmlli";
//we test using 72px font size, we may use any size. I guess larger the better.
var testSize = '72px';
var h = document.getElementsByTagName("body")[0];
// create a SPAN in the document to get the width of the text we use to te...
How to add \newpage in Rmarkdown in a smart way?
...```{r, echo=FALSE}
plot(1:10)
```
This solution assumes you are knitting PDF. For HTML, you can achieve a similar effect by adding a tag <P style="page-break-before: always">. Note that you likely won't see a page break in your browser (HTMLs don't have pages per se), but the printing layout...
Landscape printing from HTML
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The final alternative I have found is to create a landscape version in a PDF. You can point to so when the user selects print it prints the PDF. However I could not get this to auto print work in IE7.
<link media="print" rel="Alternate" href="print.pdf">
In conclusion in some browsers it ...
App Inventor 2 “虚拟”屏幕：同一屏幕展示多屏内容，模拟切换屏幕 · App...
...显示/隐藏即可实现屏幕切换效果，而且效率更高！
更多技术细节»。
开发步骤
使用多个布局替代多屏幕，布局中放置原本多个屏幕中的组件，高度、宽度设置“充满”：
初始化中设置主屏幕显示，其他屏...
【地图API】地图App的开发思路 - App Inventor 2 中文网 - 清泛IT社区，为创新赋能！
...究api所提供的功能点。
地图标记应该也有相关api，从技术实现角度，只要地图api 能完成的功能，ai2仅仅包装了一层也应该能完成。
使用“Activity启动器”组件，用法请参考文档：https://www.fun123.cn/reference/ ... tml#ActivityStarter
...
Intelligent point label placement in R
... my solution to this problem:
I did this by hand in Preview (very basic PDF/image viewer on OS X) in just a few minutes. (Edit: The workflow was exactly what you'd expect: I saved the plot as a PDF from R, opened it in Preview and created textboxes with the desired labels (9pt Helvetica) and then...
How do I conditionally apply CSS styles in AngularJS?
...}}">
and code
$scope.selectcss = function (data) {
if (data == '.pdf')
return 'circle circle-pdf';
else
return 'circle circle-small';
};
css
.circle-pdf {
width: 24px;
height: 24px;
font-size: 16px;
font-weight: 700;
padding-top: 3px;
-webkit...
EC2 instance types's exact network performance?
...and then gradually drop to the sustained levels above after a few minutes. PDF links to reports below:
t2.small (PDF)
t2.medium (PDF)
t2.large (PDF)
Note that these are within the same region - if you're transferring across regions, real performance may be much slower. Even for the larger instanc...