58 lines
1.7 KiB
JavaScript
58 lines
1.7 KiB
JavaScript
/*! is.js
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(c) 2001 Douglas Crockford
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2001 June 3
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*/
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// is
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// The -is- object is used to identify the browser. Every browser edition
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// identifies itself, but there is no standard way of doing it, and some of
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// the identification is deceptive. This is because the authors of web
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// browsers are liars. For example, Microsoft's IE browsers claim to be
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// Mozilla 4. Netscape 6 claims to be version 5.
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var is = {
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ie: navigator.appName == 'Microsoft Internet Explorer',
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java: navigator.javaEnabled(),
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ns: navigator.appName == 'Netscape',
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ua: navigator.userAgent.toLowerCase(),
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version: parseFloat(navigator.appVersion.substr(21)) ||
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parseFloat(navigator.appVersion),
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win: navigator.platform == 'Win32'
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}
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/*!*
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* preserve this comment, too
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*/
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is.mac = is.ua.indexOf('mac') >= 0;
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if (is.ua.indexOf('opera') >= 0) {
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is.ie = is.ns = false;
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is.opera = true;
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}
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if (is.ua.indexOf('gecko') >= 0) {
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is.ie = is.ns = false;
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is.gecko = true;
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}
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/*@cc_on
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/*@if (@_win32)
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if (is.ie && is.win)
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document.write("PASS: IE/win honored conditional comment.<br>");
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@else @*/
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if (is.ie && is.win)
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document.write("FAIL: IE/win did not honor multi-line conditional comment.<br>");
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else
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document.write("PASS: Non-IE/win browser ignores multi-line conditional comment.<br>");
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/*@end
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@*/
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var recognizesCondComm = true;
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//@cc_on/*
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recognizesCondComm = false;
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//@cc_on*/
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if ((is.ie && is.win) == recognizesCondComm)
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document.write("PASS: IE/win honored single-line conditional comment.<br>");
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else
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document.write("FAIL: Non-IE/win browser did not ignore single-line conditional comment.<br>");
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