«What’s wrong with this function? (Hint: it’s meant to execute periodically on a JavaScript page.)
function updateExpirationText() {
var now = new Date;
products.forEach(function(item) {
var expiresDate = item.expiresDate || Date.parse(item.expires),
remaining = expiresDate – now,
text = remaining < 0 ? ‘expired’ : msToDuration(remaining);
$(‘item-’ + item.id + ‘ .time-remaining’).text(remaining);
});
}
It’s a trick question. Maybe nothing’s wrong. But if products can get very long, or if the msToDuration is very slow, you’ve locked up the UI for a long time. At best, this makes for sluggish response; at worst, the page that contains this will trigger a “script running slowly” error, and the user will likely abort all the JavaScript on the page.
If this computation only needs to run once, and when (or before) the page loads, you can do it on the server. But often a computation depends on some aspect of the client state, that isn’t known when the page is requested. In this example, the computation depends on the current time (and the current time keeps changing). In another case, the computation might depend upon the values of some controls or other widgets on the page — if we’ve gone all AJAXy, and want to show the user an instant response, even if that means some client-side computation.»
You can read the full version of article on Oliver Steel Blog.
]]>«What’s wrong with this function? (Hint: it’s meant to execute periodically on a JavaScript page.)
function updateExpirationText() {
var now = new Date;
products.forEach(function(item) {
var expiresDate = item.expiresDate || Date.parse(item.expires),
remaining = expiresDate – now,
text = remaining < 0 ? ‘expired’ : msToDuration(remaining);
$(‘item-’ + item.id + ‘ .time-remaining’).text(remaining);
});
}
It’s a trick question. Maybe nothing’s wrong. But if products can get very long, or if the msToDuration is very slow, you’ve locked up the UI for a long time. At best, this makes for sluggish response; at worst, the page that contains this will trigger a “script running slowly” error, and the user will likely abort all the JavaScript on the page.
If this computation only needs to run once, and when (or before) the page loads, you can do it on the server. But often a computation depends on some aspect of the client state, that isn’t known when the page is requested. In this example, the computation depends on the current time (and the current time keeps changing). In another case, the computation might depend upon the values of some controls or other widgets on the page — if we’ve gone all AJAXy, and want to show the user an instant response, even if that means some client-side computation.»
You can read the full version of article on Oliver Steel Blog.
]]>Part 1 of this series gave examples of how to work with directories within the file system.
]]>Part 1 of this series gave examples of how to work with directories within the file system.
Part 2 covers how to use the File class to create, move, copy, and delete files. It will also demonstrate the usage of the FileStream class for working with the contents of individual files.
]]>
If you worked with great library Prototype.js surely yes. Such functionality implemented in class Template, which has just one method - evaluate. It does replacement in string template using input data object.
Now comes the tasty thing. How do you thing is it possible in C# 3.0? Of course yes! Let’s write the test (I expect you’ve heard about TDD):
Now we should implement Template class. Use a little bit reflection and we got prototype.js Template on C# 3.0.
Be happy of using it :)
In russian ]]>If you worked with great library Prototype.js surely yes. Such functionality implemented in class Template, which has just one method - evaluate. It does replacement in string template using input data object.
Now comes the tasty thing. How do you thing is it possible in C# 3.0? Of course yes! Let’s write the test (I expect you’ve heard about TDD):
Now we should implement Template class. Use a little bit reflection and we got prototype.js Template on C# 3.0.
Be happy of using it :)
In russian ]]>At the same time read interesting article on A List Apart How to size text in css. Author in the several iterations showed how to define font size which will be the same for all main browsers.
<style type="text/css">
body{ font-size:100%; line-height:1.125em; }
bodytext p { font-size:0.875em; }
.sidenote { font-size:0.75em; }
</style>
<!--[if !IE]>-->
<style type="text/css">
body { font-size:16px; }
</style>
<!--<[endif]-->
This article is rich for useful links so I did some research.
I found very interesting topic.
Very popular technique.
Setting Type on the Web to a Baseline Grid author showed how to code grided page. Result here.
Interesting method you can use
background image, to check your page. Here you can find set of such backgrounds.
Here series of articles about such grid systems: One, two, three, four, five.
The most interesting was YUI tool. It’s generator of table layout. It can even generate liquid layout. Drawback - is not very friendly names of css classes.
Also you can use Blueprint framework.
I like it. It also has generator layout generator .
Unfortunately it doesn’t generate liquid layout.
Example:
http://www.ajaxline.com/common-ajax
http://www.ajaxline.com/index.php?pid=12&something=24
Not hard to see that first url is self explained. Easy to memorize and more interesting for search bots.
In this post I'm not going to make Url rewriting overview. I just tell about my experience with 2 tools. I used them on Windows Server 2003 and IIS6.
]]>Example:
http://www.ajaxline.com/common-ajax
http://www.ajaxline.com/index.php?pid=12&something=24
Not hard to see that first url is self explained. Easy to memorize and more interesting for search bots.
In this post I'm not going to make Url rewriting overview. I just tell about my experience with 2 tools. I used them on Windows Server 2003 and IIS6.
http://cheeso.members.winisp.net/IIRF.aspx
This tool allows to use syntax like in apache mod_rewrite. It's open source and free.
There is binaries and source http://www.codeplex.com/IIRF/Release/ProjectReleases.aspx?ReleaseId=5018
To install you just need to add isapi filter to your website in IIS6 and set rewrite rules in ini file. Works perfectly. Can be used not only in .NET
Even more comfortable tool. Without isapi filters. All rules defined in web.config file. On site http://urlrewriter.net/ you can read instructions how to install it on different versions of windows.
Event for IIS6, which doesn't support ".*" mask for query processing you can find there solution.
]]>
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