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What's the best way to break from nested loops in JavaScript?
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1078
Just like Perl,
loop1:
for (var i in set1) {
loop2:
for (var j in set2) {
loop3:
...
How can I get file extensions with JavaScript?
...egex twice?
– Andrew Hedges
Oct 11 '08 at 7:39
6
The highly-rated answer below is much better.
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How do I test for an empty JavaScript object?
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ECMA 5+:
// because Object.keys(new Date()).length === 0;
// we have to do some additional check
Object.keys(obj).length === 0 && obj.constructor === Object
Note, though, that this creates an unnecessary array (the return value of keys).
Pre-ECMA 5:
function isEmpty(o...
Writing to an Excel spreadsheet
... for n, v_desc, v in enumerate(zip(desc, variables)):
sh.write(n, 0, v_desc)
sh.write(n, 1, v)
n+=1
sh.write(n, 0, col1_name)
sh.write(n, 1, col2_name)
for m, e1 in enumerate(list1, n+1):
sh.write(m, 0, e1)
for m, e2 in enumerate(list2, n+1):
...
Lock Escalation - What's happening here?
While altering a table (removing a column) in SQL Server 2008, I clicked the Generate Change Script button and I noticed that the change script it generated drops the column, says "go" and then runs an additional ALTER TABLE statement that appears to set the lock escalation for the table to "TABLE"....
How do you round to 1 decimal place in Javascript?
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Math.round(num * 10) / 10 works, here is an example...
var number = 12.3456789
var rounded = Math.round(number * 10) / 10
// rounded is 12.3
if you want it to have one decimal place, even when that would be a 0, then add...
var fixed = rou...
How to find event listeners on a DOM node when debugging or from the JavaScript code?
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508
If you just need to inspect what's happening on a page, you might try the Visual Event bookmark...
HC-05/BLE 蓝牙通信数据乱码？接收到的中文乱码？乱码的原理及解决思路 · ...
... 搜索 HC-05/BLE 蓝牙通信数据乱码？接收到的中文乱码？乱码的原理及解决思路
蓝牙通信过程中，数据出现乱码？
数据符合预期，但是中文显示乱...
App Inventor 2 TaifunBattery 电池管理器拓展：获取电量、电池健康状态、...
...障(unspecified failure)。
返回电池电量。
可能的值介于 0% 和 100% 之间。
返回电池插入状态。
可能的值包括：usb、ac、无线(wireless)或未知(unknown)。
返回电池状态。
可能的值包括：正在充电(charging)、已充满(full)、正在放电(...