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Amazon S3 direct file upload from client browser - private key disclosure
...s:
Diagram: http://docs.aws.amazon.com/AmazonS3/latest/dev/UsingHTTPPOST.html
Example code: http://docs.aws.amazon.com/AmazonS3/latest/dev/HTTPPOSTExamples.html
The signed policy would go in your html in a form like this:
<html>
<head>
...
<meta http-equiv="Content-Type...
How to take screenshot of a div with JavaScript?
I am building something called the "HTML Quiz". It's completely ran on JavaScript and it's pretty cool.
10 Answers
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HTML text input allow only numeric input
Is there a quick way to set an HTML text input ( <input type=text /> ) to only allow numeric keystrokes (plus '.')?
6...
How to disable HTML button using JavaScript?
I’ve read that you can disable (make physically unclickable) an HTML button simply by appending disable to its tag, but not as an attribute, as follows:
...
Programmatically creating Markdown tables in R with KnitR
...n formatting (sort of like xtable , but with Markdown instead of LaTeX or HTML). I know that I can just embed the HTML output from xtable, but I was wondering if there were any Markdown-based solutions?
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target=“_blank” vs. target=“_new”
...
Use "_blank"
According to the HTML5 Spec:
A valid browsing context name is any string with at least one character that does not start with a U+005F LOW LINE character. (Names starting with an underscore are reserved for special keywords.)
A valid browsin...
Is it possible to set the equivalent of a src attribute of an img tag in CSS?
...nt:url("image.jpg").
Full working solution (Live Demo):
<!doctype html>
<style>
.MyClass123{
content:url("http://imgur.com/SZ8Cm.jpg");
}
</style>
<img class="MyClass123"/>
Tested and working:
Chrome 14.0.835.163
Safari 4.0.5
Opera 10.6
Tested a...
html select option separator
...y code, it didn't properly translate. So for those with that problem, the HTML encoding for the horizontal unicode box drawing character is ─ fileformat.info/info/unicode/char/2500/index.htm and there is also a heavier option at ━ fileformat.info/info/unicode/char/2501/index.ht...
On - window.location.hash - Change?
...
HTML5 specifies a hashchange event. This event is now supported by all modern browsers. Support was added in the following browser versions:
Internet Explorer 8
Firefox 3.6
Chrome 5
Safari 5
Opera 10.6
...
Targeting position:sticky elements that are currently in a 'stuck' state
...t sets the attribute stuck which you can match in CSS with header[stuck]:
HTML:
<img id="logo" ...>
<div>
<header style="position: sticky">
...
</header>
...
</div>
JS:
if (typeof IntersectionObserver !== 'function') {
// sorry, IE https://caniuse.com/#...