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Input placeholders for Internet Explorer
HTML5 introduced the placeholder attribute on input elements, which allows to display a greyed-out default text.
17 Ans...
How to clear a chart from a canvas so that hover events cannot be triggered?
I'm using Chartjs to display a Line Chart and this works fine:
20 Answers
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What's faster, SELECT DISTINCT or GROUP BY in MySQL?
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They are essentially equivalent to each other (in fact this is how some databases implement DISTINCT under the hood).
If one of them is faster, it's going to be DISTINCT. This is because, although the two are the same, a query optimizer would have to catch the fact that...
What is the advantage of using REST instead of non-REST HTTP?
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I don't think you will get a good answer to this, partly because nobody really agrees on what REST is. The wikipedia page is heavy on buzzwords and light on explanation. The discussion page is worth a skim just to see how much people d...
Accessing members of items in a JSONArray with Java
I'm just getting started with using json with java. I'm not sure how to access string values within a JSONArray. For instance, my json looks like this:
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Counting the number of option tags in a select tag in jQuery
How do I count the number of <option> s in a <select> DOM element using jQuery?
8 Answers
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Reference: mod_rewrite, URL rewriting and “pretty links” explained
"Pretty links" is an often requested topic, but it is rarely fully explained. mod_rewrite is one way to make "pretty links", but it's complex and its syntax is very terse, hard to grok, and the documentation assumes a certain level of proficiency in HTTP. Can someone explain in simple terms how "p...
How do I set the value property in AngularJS' ng-options?
Here is what seems to be bothering a lot of people (including me).
27 Answers
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How do you use the ellipsis slicing syntax in Python?
This came up in Hidden features of Python , but I can't see good documentation or examples that explain how the feature works.
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How to design a multi-user ajax web application to be concurrently safe
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Overview:
Intro
Server architecture
Client architecture
Update case
Commit case
Conflict case
Performance & scalability
Hi Raynos,
I will not discuss any particular product here. What others mentioned is a good toolset to have a...