On Apr 23, 2014, at 9:02 AM, Werner Laude wrote:
>
> Am 23.04.2014 um 14:54 schrieb Walter Lee Davis <wa...@wdstudio.com>:
>
>>
>>
>> One thing to remember, conceptually, is that you cannot replace the
>> "innards" of a select as if they were HTML without destroying its ability to
>> react correctly to scripting or user input. The only "bulletproof" way to
>> update the contents of a select is to set its options collection length to
>> 0, then iterate over your collection of data, using the new
>> Option(text,value) constructor to build each option. Doing it any other way
>> will end in tears. This has nothing to do with CoffeeScript or JavaScript
>> and everything to do with browsers and the DOM.
>>
>> Walter
>>
>
>
> Thanks Walter..
>
> may be you have some code to demonstrate..so I get the idea ?
Sure. This is using Prototype.js for clarity, you'll have to guess (I don't
know) how to describe it in jQuery, if that's your thing.
<select name="foo" id="foo" size="1">
<option value="1">One</option>
<option value="2">Two</option>
<option value="3">Three</option>
<option value="4">Four</option>
</select>
var new_options = [{"value": "5", "text": "Five"}, {"value": "6",
"text": "Six"}];
var foo = $('foo');
foo.options.length = 0;
new_options.each(function(opt){
foo.options[foo.options.length] = new Option(opt['text'],
opt['value']);
});
Walter
>
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