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Author Topic: Cool technique for JS speed...  (Read 1773 times)
Olde World Hacker
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« on: February 21, 2008, 12:05:40 PM »

OK this is probably silly and old hat for a lot of you, but I started doing something new today and I like it both for clarity and speed.

If I have a dynamic SELECT in a form, I've used two different methods to populate it: either I ajaxed an answer or had my PHP create JS code that was on page ... something like this:

myArr[0] = 'entry0';
myArr[1] = 'entry1';

... and so forth. It works but is pretty damn ugly- particularly in the case of multiply-dimensioned and shaped arrays. I use JSON when I send data back via AJAX, so I simply combined the two and got nice tight code that I like. After I create <whatever the array is to look like> in PHP, then I json_encode it and place this single line in my outgoing HTML:

brands = eval($theEncodedBrandsString);

What comes out in the final HTML looks like this:

brands = eval({"1":{"name":"Palace Resorts","properties":[{"id":"1","name":"Moon Palace"}]}});

... which is ugly, but wicked fast.

Just a gear turner and ,

It is now believed, that after having lived in one compound with 3 wives and never leaving the house for 5 years, Bin Laden called the U.S. Navy Seals himself.
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