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Show an image preview before upload
...ateElement('img');
// use the DOMstring for source
image.src = window.URL.createObjectURL(files[i]);
image_preview.appendChild(image);
}
}
file_input.addEventListener('change', handle_file_preview);
sh...
What is the http-header “X-XSS-Protection”?
...entire response.
The Cross-Site Scripting Filter event is logged when Windows Internet
Explorer 8 detects and mitigates a cross-site scripting (XSS) attack.
Cross-site scripting attacks occur when one website, generally
malicious, injects (adds) JavaScript code into otherwise legitimate
...
CSS – why doesn’t percentage height work? [duplicate]
... for example, or the % will likely be calculated wrong when you resize the window. height: calc(100% - 100px); And for older browsers, use this: height: -o-calc(100% - 100px); /* opera / height: -webkit-calc(100% - 100px); / google, safari / height: -moz-calc(100% - 100px); / firefox */
...
Why is no one using make for Java?
...and can easily handle Java. Sure you have to download make.exe if you use Windows, but Ant and Maven also don't come with the JDK.
...
What is the difference between JVM, JDK, JRE & OpenJDK?
...deed, there are specific implementations of the JVM for different systems (Windows, Linux, macOS, see the Wikipedia list), the aim is that with the same bytecodes they all give the same results.
JDK and JRE
To explain the difference between JDK and JRE, the best is to read the Oracle documentation a...
How to refresh app upon shaking the device?
...dTime = now - startTime;
// Check if we're still in the shake window we defined
if (elapsedTime > MAX_SHAKE_DURATION) {
// Too much time has passed. Start over!
resetShakeDetection();
}
else {
// Keep...
IntelliJ does not show project folders
...ress Enter (because weirdly it won't let me click on "New Module")
In the window that pops up, click on the "..." next button which takes you to the Content root. Find your root folder and select it
Click the "ok" button
Ignore any warning that says the name is already in use
...
Django connection to PostgreSQL: “Peer authentication failed”
... ‘localhost’ or ‘127.0.0.1’ (‘host’ lines in pg_hba.conf). On Windows,
you should always define HOST, as UNIX domain sockets are not
available.
If you want to keep using sockets, correct settings in pg_hba.conf are needed. The most simple is:
local all all ...
How to auto-remove trailing whitespace in Eclipse?
...ve code formatter option set to do it, or by during saving:
Eclipse -> Window -> Preferences -> PyDev -> Editor -> Code Style -> Code Formatter:
I use at least these:
Auto format before saving
Right trim lines?
Add new line at end of file
...
How do I create an Excel (.XLS and .XLSX) file in C# without installing Microsoft Office?
...
I've just tested this connection and it failed on a Windows Server 2008 R2 x64 RC, seems like one have to install the 2007 Office System Driver: Data Connectivity Components [microsoft.com/downloads/…
– Chris Richner
Jun 16 '09 at 7:31
...