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Capture HTML Canvas as gif/jpg/png/pdf?
...
e.g.
<canvas id=canvas width=200 height=200></canvas>
<script>
window.onload = function() {
var canvas = document.getElementById("canvas");
var context = canvas.getContext("2d");
context.fillStyle = "green";
context.fillRect(50, 50...
How can I swap positions of two open files (in splits) in vim?
...tter one, please edit this.
Also, I'd like to receive a feedback from the script aka "Window marked. Please repeat on target", however being a vimscript noob, I do not know how to do that.
All that said, the script works well as is
" <CTRL>-w m : mark first window
" <CTRL>-w m : swap ...
How to unload a package without restarting R
...
When you are going back and forth between scripts it may only sometimes be necessary to unload a package. Here's a simple IF statement that will prevent warnings that would appear if you tried to unload a package that was not currently loaded.
if("package:vegan" %in...
Add days to JavaScript Date
How to add days to current Date using JavaScript. Does JavaScript have a built in function like .Net's AddDay ?
48 Answe...
Stop setInterval call in JavaScript
...ng setInterval(fname, 10000); to call a function every 10 seconds in JavaScript. Is it possible to stop calling it on some event?
...
What are bitwise operators?
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These are the bitwise operators, all supported in JavaScript:
op1 & op2 -- The AND operator compares two bits and generates a result of 1 if both bits are 1; otherwise, it returns 0.
op1 | op2 -- The OR operator compares two bits and generates a result of 1 if the bits are...
Override body style for content in an iframe
...f the iframe content is from the same parent domain.
The following jquery script works for me. Tested on Chrome and IE8. The inner iframe references a page that is on the same domain as the parent page.
In this particular case, I am hiding an element with a specific class in the inner iframe.
B...
HTML File Selection Event
...
we gonna write it where.. in javascript script tags
– Moon
Aug 20 '10 at 5:34
5
...
How to measure time taken by a function to execute
...
Don't use Date(). Read below.
Use performance.now():
<script>
var a = performance.now();
alert('do something...');
var b = performance.now();
alert('It took ' + (b - a) + ' ms.');
</script>
It works on:
IE 10 ++
FireFox 15 ++
Chrome 24 ++
Safari 8 ++
Opera 15 ++
A...
Bash ignoring error for a particular command
...
The solution:
particular_script || true
Example:
$ cat /tmp/1.sh
particular_script()
{
false
}
set -e
echo one
particular_script || true
echo two
particular_script
echo three
$ bash /tmp/1.sh
one
two
three will be never printed.
Also, I ...