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Using a piano keyboard as a computer keyboard [closed]
I have RSI problems and have tried 30 different computer keyboards which all caused me pain. Playing piano does not cause me pain. I have played piano for around 20 years without any pain issues. I would like to know if there is a way to capture MIDI from a MIDI keyboard and output keyboard stroke...
When do items in HTML5 local storage expire?
...may run into space considerations. It's good to program defensively. Generally however things remain "forever" based on some practical definition of that word.
edit — obviously, your own application can actively remove stuff if it decides it's too old. That is, you can explicitly include some so...
一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术
...，这样就完成了支付，此时老李在电话中听到二狗子确认转账完成，就可以放心让老张把羊牵走了。
此时比特村进入了中央系统虚拟货币时代。每个村民都不需要用实物支付，支付过程变成了二狗子那边维护的账本上数字的变...
Sanitizing strings to make them URL and filename safe?
...For example, when someone uploads a file I want to make sure that I remove all dangerous characters from the name.
23 Answe...
How do I remove documents using Node.js Mongoose?
...you don't feel like iterating, try FBFriendModel.find({ id:333 }).remove( callback ); or FBFriendModel.find({ id:333 }).remove().exec();
mongoose.model.find returns a Query, which has a remove function.
Update for Mongoose v5.5.3 - remove() is now deprecated. Use deleteOne(), deleteMany() or findO...
Is it possible to ping a server from Javascript?
...ther parts of the source but you get the idea).
function Pinger_ping(ip, callback) {
if(!this.inUse) {
this.inUse = true;
this.callback = callback
this.ip = ip;
var _that = this;
this.img = new Image();
this.img.onload = function() {_that.good();};
this.img.onerro...
FormData.append(“key”, “value”) is not working
...rmdata.get(key)
and more very useful methods
Original answer:
What I usually do to 'debug' a FormData object, is just send it (anywhere!) and check the browser logs (eg. Chrome devtools' Network tab).
You don't need a/the same Ajax framework. You don't need any details. Just send it:
var xhr = ...
Using @property versus getters and setters
...
Prefer properties. It's what they're there for.
The reason is that all attributes are public in Python. Starting names with an underscore or two is just a warning that the given attribute is an implementation detail that may not stay the same in future versions of the code. It doesn't preven...
jQuery UI: Datepicker set year range dropdown to 100 years
...You can set the year range using this option per documentation here http://api.jqueryui.com/datepicker/#option-yearRange
yearRange: '1950:2013', // specifying a hard coded year range
or this way
yearRange: "-100:+0", // last hundred years
From the Docs
Default: "c-10:c+10"
The range ...
Padding or margin value in pixels as integer using jQuery
... the width/height without padding, you need to use .width() and .height(). api.jquery.com/innerWidth api.jquery.com/width api.jquery.com/outerWidth
– Andrew Ensley
May 14 '12 at 15:47
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