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Tag Archives: firebug
JavaScript Performance: for vs. while
JavaScript Loops If you have read some preformance tests on JavaScript loops, you may have heard that “while” is faster than “for”. However the question is how faster is “while”? Here are some results, but first let’s take a look … Continue reading
Friday Algorithms: JavaScript Merge Sort
Merge Sort This week I’m going to cover one very popular sorting algorithm – the merge sort. It’s very intuitive and simple as it’s described in Wikipedia: If the list is of length 0 or 1, then it is already … Continue reading
Modyfing Response Headers with Zend Framework
Response Headers You’ve probably seen that you can track the server response headers with Firebug – a wonderful extension to Firefox. But have you ever asked yourself how to change a response header with Zend Framework. header() Typically this is … Continue reading
CSS Priority: The Difference Between a.my-class and .my-class
Do You Know What’s an Inefficient CSS Selector? Perhaps! I was curious how can inefficient selectors impact a page performance. To begin with this topic let me say that inefficient selector is referred usually as nested selector: div span div … Continue reading
Posted in css
Tagged Cascading Style Sheets, Computing, firebug, Google Inc., Span and div, Web design
3 Comments
How to detect a variable existence in JavaScript?
Preface After reading one of the latest posts from Stoyan Stefanov’s blog – phpied.com I stumbled upon an interesting construction in JavaScript describing how to check an object property existence. I’m going to cover this case using as an example … Continue reading