<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id=531542 --> <head> <title>Test for Bug 531542</title> <script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=531542">Mozilla Bug 531542</a> <p id="display"></p> <div id="content" style="display: none"> </div> <pre id="test"> <script type="application/javascript"> /** Test for Bug 531542 **/ var negativeTimeoutFired = false; function negativeTimeout() { negativeTimeoutFired = true; } function testFinished() { ok(negativeTimeoutFired, "Timeout with negative delay should fire."); SimpleTest.finish(); } SimpleTest.waitForExplicitFinish(); setTimeout(negativeTimeout, -1); setTimeout(testFinished, 0); </script> </pre> </body> </html>