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For 2021 - online Python 3 training - see ((here)).

Our plans were to retire in summer 2020 and see the world, but Coronavirus has lead us into a lot of lockdown programming in Python 3 and PHP 7.
We can now offer tailored online training - small groups, real tutors - works really well for groups of 4 to 14 delegates. Anywhere in the world; course language English.

Please ask about private 'maintenance' training for Python 2, Tcl, Perl, PHP, Lua, etc.
Javascript events - a good example

Complete a form, submit it to the server, get the response page back. Typical web form filling which I sometimes describe as "batchlets" - almost back to the old style batch processing where you make up a complete job and submit it exactly has was doing in the 1970s - except that now it takes 120 ms to get a response rather than 120 minutes.

If you want local validation of your data before you submit it to the server, you need to use a client side (browser embedded) technology such as Javascript. Within your Javascript to can program events to describe actions which may (or may not) be purely local to the browser before the completed batchlet is submitted to the server.

I've just put a working example you can try showing javascript events and the complete source code onto our server. There's a further library of javascript demos too.

I love the Open Source / training world - networking, working with people, and passing back and forth great examples. And so big thanks to Keith Lovern for the today's example - amended and reproduced here with his kind permission.
(written 2005-12-09, updated 2006-06-05)

 
Associated topics are indexed as below, or enter http://melksh.am/nnnn for individual articles
W602 - Web and Intranet - Client Side Technologies
  [411] Javascript examples (some PHP and MySQL too) - (2005-08-13)
  [1322] Flash - is it available to your web page? - (2007-08-26)
  [1681] Adding a button to a web page to print the page - (2008-06-18)
  [1749] Using server side and client side programming together - (2008-08-11)
  [1812] Starting Ajax - easy example of browser calling up server data - (2008-09-27)
  [1813] Ajax - going Asyncronous and what it means - (2008-09-28)
  [1814] Javascript/HTML example, dynamic server monitor - (2008-09-28)
  [2390] Dynamic / changing images on your web page - (2009-09-01)
  [2628] An example of an injection attack using Javascript - (2010-02-08)
  [3128] How does your browser find out about itself? - (2011-01-11)
  [4277] Sending a message to the server and changing text on a page when a button is pressed - (2014-05-23)
  [4310] Problem ... I want to print a series of numbered forms - (2014-10-05)


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This is a page archived from The Horse's Mouth at http://www.wellho.net/horse/ - the diary and writings of Graham Ellis. Every attempt was made to provide current information at the time the page was written, but things do move forward in our business - new software releases, price changes, new techniques. Please check back via our main site for current courses, prices, versions, etc - any mention of a price in "The Horse's Mouth" cannot be taken as an offer to supply at that price.

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