If you learned CSS before, you should know that CSS is not a programming language. You can use it to design webpage style, but you cannot use it for programming, i.e, CSS is what designer uses, not what programmer uses. Programmer may think that CSS is very troublesome, it has no variables, no conditional statements, it just allows line-by-line description of HTML elementsLuckily, CSS preprocessor appear which makes CSS programmable. The general idea of CSS preprocessor is using a programming language to design the website style, and then convert it to CSS files.Among different CSS preprocesso...

There are times where running IF statements inside a query can be useful. MySQL provides a simple way to do this through the use of IF and CASE statements.The IF statement takes three arguments; the conditional, the true value and the false value. False and true values may be static values or column values. For example:SELECT IF(score > 100, 100, score) AS scoreFROM exam_resultsthis will return the value in the score column limited to a maximum value of 100. IF statements can also be nested:SELECT IF(score > 100, 100, IF(score < 0, 0, score))FROM exam_resultsCASE statements (s...

I believe that unless your application meets one of these native application criteria, you should not create a native application, but should instead focus on building a mobile web application. Like I said before, I’m a big fan of native applications and I feel that there are a lot of great innovative and market opportunities here, but mobile web apps are the only long-term viable platform for mobile content, services, and applications.Native applications don’t service the user better in any significant way; they only add cost to your project, decrease your distribution channels,...