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What does [object Object] mean?
I am trying to alert a returned value from a function and I get this in the alert:
9 Answers
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AWS Difference between a snapshot and AMI
...volume plus some metadata like the architecture, kernel, AMI name, description, block device mappings, and more.
You can take a snapshot of an EBS boot volume and turn it into an EBS boot AMI by registering it with the appropriate metadata. The trickiest part of this is specifying the correct AKI...
Animate scrollTop not working in firefox
This function works fine. It scrolls the body to a desired container's offset
11 Answers
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Making custom right-click context menus for my web-app
... down menus when you right-click. Somehow they override the browser's behavior of drop-down menu, and I'm now sure exactly how they do it. I found a jQuery plugin that does this, but I'm still curious about a few things:
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How to get a DOM Element from a JQuery Selector
...of code, but would take a day to use document.getElementById. I agree that mixing libraries is a bad idea, but it just happens sometimes and the task of getting a DOM element from a jquery object is just hard, especially with .get(0) not having browser compatibility.
– Slavo
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Set a default parameter value for a JavaScript function
I would like a JavaScript function to have optional arguments which I set a default on, which get used if the value isn't defined (and ignored if the value is passed). In Ruby you can do it like this:
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Android equivalent to NSNotificationCenter
In the process of porting an iPhone application over to android, I am looking for the best way to communicate within the app. Intents seem to be the way to go, is this the best (only) option? NSUserDefaults seems much lighter weight than Intents do in both performance and coding.
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App Inventor 2 中的响应式设计 · App Inventor 2 中文网
...work with in your app design for the tablet.
It’s also possible to take mixed approaches. These can be more confusing and less useful, and we recommend that you use them only in special circumstances. Here’s how they behave:
Using percentages with fixed sizing: Suppose you set sizing to f...
How to implement a many-to-many relationship in PostgreSQL?
...se, unquoted identifiers. Never use reserved words and avoid double-quoted mixed case identifiers if you can.
"name" is not a good name. I renamed the column of the table product to be product (or product_name or similar). That is a better naming convention. Otherwise, when you join a couple of tab...
Why is enum class preferred over plain enum?
...s Animal{Dog, Cat, Tiger};
enum class Pets{Dog, Parrot};
Here we can not mix Animal and Pets values.
Animal a = Dog; // Error: which DOG?
Animal a = Pets::Dog // Pets::Dog is not an Animal
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