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How do I add a simple onClick event handler to a canvas element?
...lement.
elements.push({
colour: '#05EFFF',
width: 150,
height: 100,
top: 20,
left: 15
});
// Render elements.
elements.forEach(function(element) {
context.fillStyle = element.colour;
context.fillRect(element.left, element.top, element.width, element.height);
});
jsF...
How to save a PNG image server-side, from a base64 data string
...
+100
Try this:
file_put_contents('img.png', base64_decode($base64string));
file_put_contents docs
...
How do I call some blocking method with a timeout in Java?
...edException {
final Something somethingRunnable = new Something(5, 1000);
Thread thread = new Thread(somethingRunnable);
thread.start();
thread.join(2000);
if (thread.isAlive()) {
somethingRunnable.setStopRequested(true);
thread.join(20...
Characters allowed in a URL
... / %x31-39 DIGIT ; 10-99
/ "1" 2DIGIT ; 100-199
/ "2" %x30-34 DIGIT ; 200-249
/ "25" %x30-35 ; 250-255
reg-name = *( unreserved / pct-encoded / sub-delims )
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~" <--...
Scroll to a div using jquery
..." style="position:absolute;top:200%;left:0%;background-color:orange;height:100px;width:200px;">
The DIV element.
</div>
</body>
</html>
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...
curl POST format for CURLOPT_POSTFIELDS
...
100
In case you are sending a string, urlencode() it. Otherwise if array, it should be key=>val...
What is VanillaJS?
...
try 2.2*100 in vanilla js :D
– Suhail Mumtaz Awan
Mar 20 '18 at 6:47
...
Circular gradient in android
...this
<View
android:layout_width="200dp"
android:layout_height="100dp"
android:background="@drawable/my_gradient_drawable"/>
Center
You can change the center of the radius with
android:centerX="0.2"
android:centerY="0.7"
where the decimals are fractions of the width and heig...
Divide a number by 3 without using *, /, +, -, % operators
...the repeating numbers make this easy to calculate using a / 3 = a/10*3 + a/100*3 + a/1000*3 + (..). In binary it's almost the same: 1 / 3 = 0.0101010101 (base 2), which leads to a / 3 = a/4 + a/16 + a/64 + (..). Dividing by 4 is where the bit shift comes from. The last check on num==3 is needed beca...
How to determine if a decimal/double is an integer?
...g-point calculation proof answer:
Math.Abs(d % 1) <= (Double.Epsilon * 100)
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