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JavaScript and DHTML


Grubler
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Hello. I hope that someone can point me in the right direction. I'm designing a wesite and would like to have som dynamic content.I know how to use the js inside of the html with innerHTML. But I would like the JavaScript to get the description text from a text file or a mySql. This is much easier to maintain than have to edit the html every time I want to change the description text. The site contains a list of items and a field for description.Something like this: <li id="lst_head" class="header1">Items<ul class="txt_lst"><li id="id_lamp">Lamp</li><li id="id_heater">Heater</li></ul></li> Then i have a div where the description is supposed to "pop" up. <div class="lst_def_txt" id="></div> So, how to make a script that get some text form a file or database and place it in the div when I click an item in the list? Regards,Jon

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You need knowledge of a server side scripting language like PHP and familiarity with SQL, all can be found in the tutorials section of W3Schools.

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Server side? Well, since it is the user clicking the item to get more info, it is client side.Earlier I have used the innerHTML to get the info text.Like this<html><body><li id="lst_head" class="header1">Items<ul class="txt_lst"><li id="id_lamp" onclick="lst_def_txt.innerHTML='Some text about lamp.'">Lamp</li><li id="id_heater" onclick="lst_def_txt.innerHTML='Some text about heater.'">Heater</li></ul></li><div id="lst_def_txt"></div></body></html> But it is a pain in the *** maintaining the description text. Therefore I would like to get the description text from a text file or from a database. /Jon

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right, the click event is client side. but if you want to interact with database on the server or write to a file on the server, well, you can see what kind of language that will need. If you just want to maintain a text file instead of a DB, then you can just use JS to read from it, and manually update it yourself, although a DB is usually a cleaner, easily maintainable, and more organized way to go. Depends on your needs and the extent of your application.

Edited by thescientist
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Yes of course if I would write to a db or txt that clearly is something else.But here I just want to get the info FROM a txt or db.Lets say I have a file description.txt on the server. This file contains something like[Lamp]This is description for the lamp.[Heater]This is the description for the heater Then how can I get this text and use it to fill the div in my html for the onclick event?

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If you need to read a text file in the manner you described, then use AJAX.http://www.w3schools.com/ajax/default.asp Anything to do with a DB will require a server side language. Any writing to a file other than manually editing it yourself in a text editor will also require a server side language.

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