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Javascript communication between browser tabs/windows [duplicate]
...elements['message'];
setCookie(t.value);
setTimeout(updateMessage, 100);
}
updateMessage();
//--></script>
receiver.html:
<h1>Receiver</h1>
<p>Watch the text appear in the text box below as you type it in the sender.</p>
<form name="receiver">
<...
Oracle “Partition By” Keyword
... | 50 |
+--------------+---------------+
| Hugo Boss | 100 |
+--------------+---------------+
| No brand | 22 |
+--------------+---------------+
2) The boss says "Now get me a list of all items, with their brand AND number of items that the respective brand...
How to count TRUE values in a logical vector
... made the vector much larger for comparison:
z <- sample(c(TRUE,FALSE),1000000,rep=TRUE)
system.time(sum(z))
user system elapsed
0.03 0.00 0.03
system.time(length(z[z==TRUE]))
user system elapsed
0.75 0.07 0.83
system.time(length(which(z)))
user system elapsed
...
How do I auto-hide placeholder text upon focus using css or jquery?
...m(field.val()) == '') {
field.val('');
span.fadeIn(100);
} else {
span.fadeTo(100, 0);
}
};
field.focus(function () {
span.fadeOut(100);
}).blur(onBlur);
onBlur();
});
css:
.overlabel {
border: 0.1em solid;
color: #a...
How to bind 'touchstart' and 'click' events but not respond to both?
...ouch.
Bind to both, but make a flag so the function only fires once per 100ms or so.
var flag = false;
$thing.bind('touchstart click', function(){
if (!flag) {
flag = true;
setTimeout(function(){ flag = false; }, 100);
// do something
}
return false
});
...
Fixed width buttons with Bootstrap
...
With BS 4, you can also use the sizing, and apply w-100 so that the button can occupy the complete width of the parent container.
<link href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-beta.3/css/bootstrap.min.css" rel="stylesheet" />
<script src="https://a...
Pythonic way to find maximum value and its index in a list?
...
Sven MarnachSven Marnach
446k100100 gold badges833833 silver badges753753 bronze badges
...
Shell command to sum integers, one per line?
...
I have a file with 100 million numbers. The awk command takes 21s; the paste command takes 41s. But good to meet 'paste' nevertheless!
– Abhi
Jan 25 '13 at 6:07
...
Get a filtered list of files in a directory
...lob
Wild Cards:
files=glob.glob("data/*")
print(files)
Out:
['data/ks_10000_0', 'data/ks_1000_0', 'data/ks_100_0', 'data/ks_100_1',
'data/ks_100_2', 'data/ks_106_0', 'data/ks_19_0', 'data/ks_200_0', 'data/ks_200_1',
'data/ks_300_0', 'data/ks_30_0', 'data/ks_400_0', 'data/ks_40_0', 'data/ks_45_...
App Inventor 2 拓展参考文档 · App Inventor 2 中文网
...
【数据图表】 ECharts/ECharts3D 拓展：基于 ECharts 强大的个性化数据图表展示：仪表盘、柱状图、折线图、饼图
【数据表格】 TableView 拓展：数据表格视图，表格形式显示列表
【剪贴板】 Clipboard 拓展：实现剪贴板的复制粘贴...