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Focus on JavaScript |
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Testing Colours
Fri, 16 May 2008 13:33:00 +0800
JavaScript irons out browser differences
Testing what colour or background colour part of your page is set to is not as straightforward as it ought to be. When you use JavaScript...
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Mathematical Arrays
Thu, 15 May 2008 15:28:00 +0800
JavaScript allows you to add your own classes and objects
If you have several arrays that contain numbers and you want to make working with those arrays easier then take a...
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Multiple Requests
Wed, 14 May 2008 12:22:00 +0800
You can submit a second Ajax request before the first returns provided you code it the right way.
In all of the preceding Ajax tutorials we have looked at how to...
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JavaScript Execution Order
Tue, 13 May 2008 04:52:00 +0800
Which piece of JavaScript runs when?
To someone experienced with using JavaScript it is really obvious which parts of the code will be run at what stage in the processing of...
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Creating Objects
Mon, 12 May 2008 07:48:00 +0800
JavaScript is a prototyping language.
You are not limited to just those objects that JavaScript has already defined or even to extending those objects (which would allow you to create objects...
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Introduction to Form Field Validation
Sun, 11 May 2008 14:56:00 +0800
One of the first types of JavaScript you are likely to need to write for yourself is to validate a form.
Before we start looking at how to validate form fields...
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Watermarking Images
Sat, 10 May 2008 15:59:00 +0800
Don't rely on JavaScript to protect your images!
The only effective way to protect images on your web site is to watermark them. Find out why this method works while the...
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Alternatives to "eval"
Fri, 09 May 2008 12:02:00 +0800
Some JavaScript commands are so inefficient and so rarely needed that you have to wonder why they are included in JavaScript in the first place.
"eval" is one of the most...
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What JavaScript Cannot Do
Thu, 08 May 2008 14:34:00 +0800
Use the right tools for the job. While it is possible to put screws in with a spanner a screwdriver works far more effectively. Of course that screwdriver wont help...
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Aborting Ajax
Wed, 07 May 2008 12:52:00 +0800
Sometimes when waiting for an Ajax response the situation changes so that you no longer need it.
Since Ajax is normally run asynchronously where we don't wait for the response to...
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