<!-- This example is from the book _JavaScript: The Definitive Guide_. --> <!-- Written by David Flanagan. Copyright (c) 1996 O'Reilly & Associates. --> <!-- This example is provided WITHOUT WARRANTY either expressed or implied.--> <!-- You may study, use, modify, and distribute it for any purpose. --> <SCRIPT> // This is a long string in XBM image format. It defines an image. // This is an ASCII format, which means we can easily manipulate it // in JavaScript, but also means that it is not compact. This is only // a 22x22 pixel image. The real power of this technique comes, of course // when we start generating XBM data dynamically at run time instead of // using a static string as we do here. image_text =index.html "#define plaid_width 22\n" + "#define plaid_height 22\n" + "#define plaid_x_hot -1\n" + "#define plaid_y_hot -1\n" + "static char plaid_bits[] = {\n" + " 0x75, 0xfd, 0x3f, 0xaa, 0xfa, 0x3e, 0x75, 0xfd, 0x3f, 0xaa, 0xfa, 0x3e,\n" + " 0x75, 0xfd, 0x3f, 0xff, 0x57, 0x15, 0x75, 0xfd, 0x3f, 0xaa, 0xfa, 0x3e,\n" + " 0x75, 0xfd, 0x3f, 0xaa, 0xfa, 0x3e, 0x75, 0xfd, 0x3f, 0x20, 0xa8, 0x2b,\n" + " 0x20, 0x50, 0x15, 0x20, 0xa8, 0x2b, 0x20, 0x50, 0x15, 0x20, 0xa8, 0x2b,\n" + " 0xff, 0xff, 0x3f, 0x20, 0xa8, 0x2b, 0x20, 0x50, 0x15, 0x20, 0xa8, 0x2b,\n" + " 0x20, 0x50, 0x15, 0x20, 0xa8, 0x2b};\n"; // Here we create a new window, open the document, specifying a MIME type of // image/xbm, and then output the image text. The window will display // the XBM data we give it. win1 = window.open("", "win1", "width=100,height=100,resizable"); var d = win1.document; d.open('image/xbm'); d.write(image_text); d.close(); // There are also a couple of other ways to use XBM image data that do not // involve specifying a MIME type when opening the document. Here we // create a new window, and then use a javascript: URL as the SRC of an // inline <IMG>. This is an XBM image embedded in a text/html document, // so we can display text, anchors, etc. win2 =index.html window.open("", "win2", "width=100,height=100,resizable"); var d = win2.document; d.open(); d.write('<B>Plaid:</B><BR>'); d.write('<A HREF="javascript:self.close();">'); d.write('<IMG SRC="javascript:opener.image_text" WIDTH=22 HEIGHT=22>'); d.write('</A>'); d.close(); // We can also use the javascript: URL with the BACKGROUND tag of the // <BODY> tag. XBM is a black-on-white image format, but note how the // BGCOLOR tag can replace the white background. win3 =index.html window.open("", "win3", "width=100,height=100,resizable"); var d = win3.document; d.open(); d.write('<BODY BACKGROUND="javascript:opener.image_text" BGCOLOR="red">'); d.close(); </SCRIPT>
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![]() o List host: MIT, Site host massmind.org, Top posters @none found - Page Editors: James Newton, David Cary, and YOU! * Roman Black of Black Robotics donates from sales of Linistep stepper controller kits. * Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters. * Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated! * Contributors: Richard Seriani, Sr. |
Ashley Roll has put together a really nice little unit here. Leave off the MAX232 and keep these handy for the few times you need true RS232! |
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