Javascript: displaying images with onchange event Post: 302925552

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Top Forums Programming Javascript: displaying images with onchange event Post 302925552 by Akshay Hegde on Monday 17th of November 2014 10:56:45 PM

11-17-2014

Moderator

Quote:

Originally Posted by figaro

I dont understand this solution. You are declaring an object test that is not actually used for display purposes. This looks very hackish to me:

Code:

img = document.getElementById("test")

I just added attribute id while creating img element for easy access, I have checked for img element with id test, if it doesn't exist already in body, then create img element append to div distribution, else meaning img element with id test, already exists so we don't have to create again, so just access element where id is "test" img = document.getElementById("test"), and change attribute src inside the switch statement. First you try with pictures other than svg ( png, jpeg ), you will be able to view changes, as and when there is a change in dropdown. You will understand better if you could use some debug tool like firebug etc.

Thanks

Akshay Hegde

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LEARN ABOUT OSX

img-xbm

img-xbm(n)																img-xbm(n)

__________________________________________________________________________________________________________________________________________________

NAME

       img-xbm - Img, X Windows Bitmap Format (xbm)

SYNOPSIS

       package require Tk

       package require img::xbm  ?1.4?

       image create photo ?name? ?options?

_________________________________________________________________

DESCRIPTION

       The  package  img::xbm  is a sub-package of Img. It can be loaded as a part of the complete Img support, via package require Img, or on its
       own, via package require img::xbm.

       Like all packages of Img it does not provide new commands, but extends the existing Tk command image so that it supports  files	containing
       raster images in the X Windows Bitmap Format (xbm). More specifically img::xbm extends Tk's photo image type.

       The name of the new format handler is xbm.  This handler does not provide additional configuration options.

       All of the above means that in a call like

       image create photo ?name? ?options?

       [1]    Image data in xbm format (options -data and -file) is detected automatically.

       [2]    The format name xbm is recognized by the option -format.

SEE ALSO

       img-bmp,  img-dted,  img-gif,  img-ico, img-intro, img-jpeg, img-pcx, img-pixmap, img-png, img-ppm, img-ps, img-raw, img-sgi, img-sun, img-
       tga, img-tiff, img-window, img-xbm, img-xpm

KEYWORDS

       image handling, tk, xbm

COPYRIGHT

       Copyright (c) 1995-2009 Jan Nijtmans <nijtmans@users.sourceforge.net>

Img									1.4								img-xbm(n)