<!-- 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>
| file: /Techref/language/JAVA/script/definitive/examples/14.2.txt, 2KB, , updated: 1997/4/4 10:59, local time: 2024/11/27 06:21,
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