85 lines
3.5 KiB
HTML
85 lines
3.5 KiB
HTML
<!DOCTYPE html>
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<!-- bessel.js (C) 2013-present SheetJS http://sheetjs.com -->
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<!-- vim: set ts=2: -->
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<html>
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<head>
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<title>Bessel Live Demo</title>
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<script src="bessel.js"></script>
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<script src="https://cdn.rawgit.com/SheetJS/printj/master/printj.js"></script>
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</head>
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<body>
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<b>Bessel Live Demo</b><br />
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<a href="https://github.com/SheetJS/bessel">Source Code</a><br />
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<a href="https://github.com/SheetJS/bessel/issues">Issues? Something look weird? Click here and report an issue</a><br />
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<br />
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<table>
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<tr><td><b>Number:</b></td><td><input type="text" id="val" value="1.5"></td></tr>
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<tr><td><b>Order:</b></td><td><input type="text" id="ord" value="1"></td></tr>
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<tr><td colspan="2"> </td></tr>
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<tr><td colspan="2"><b><pre id="jt">J</pre></b></td></tr>
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<tr><td colspan="2"><b><pre id="yt">Y</pre></b></td></tr>
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<tr><td colspan="2"><b><pre id="it">I</pre></b></td></tr>
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<tr><td colspan="2"><b><pre id="kt">K</pre></b></td></tr>
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</table>
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</body>
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<script>
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/*jshint browser:true */
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var V = document.getElementById('val');
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var O = document.getElementById('ord');
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var J = document.getElementById('jt');
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var Y = document.getElementById('yt');
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var I = document.getElementById('it');
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var K = document.getElementById('kt');
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function update() {
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var v = Number(V.value);
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var o = Number(O.value);
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if(v !== v) { J.innerHTML=Y.innerHTML=I.innerHTML=K.innerHTML = "Value |" + V.value + "| not valid"; return; }
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if(o !== o) { J.innerHTML=Y.innerHTML=I.innerHTML=K.innerHTML = "Order |" + O.value + "| not valid"; return; }
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o |= 0;
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try { J.innerHTML = PRINTJ.sprintf("J(%.11g, %d) = %+.11g", v, o, BESSEL.besselj(v, o)); } catch(e) { J.innerHTML = String(e); }
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try { Y.innerHTML = PRINTJ.sprintf("Y(%.11g, %d) = %+.11g", v, o, BESSEL.bessely(v, o)); } catch(e) { Y.innerHTML = String(e); }
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try { I.innerHTML = PRINTJ.sprintf("I(%.11g, %d) = %+.11g", v, o, BESSEL.besseli(v, o)); } catch(e) { I.innerHTML = String(e); }
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try { K.innerHTML = PRINTJ.sprintf("K(%.11g, %d) = %+.11g", v, o, BESSEL.besselk(v, o)); } catch(e) { K.innerHTML = String(e); }
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}
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/* Bind to relevant events */
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if(O.addEventListener) {
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O.addEventListener('keyup', update);
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V.addEventListener('keyup', update);
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J.addEventListener('change', update);
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Y.addEventListener('change', update);
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I.addEventListener('change', update);
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K.addEventListener('change', update);
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} else if(O.attachEvent) {
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O.attachEvent('onkeyup', update);
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V.attachEvent('onkeyup', update);
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J.attachEvent('onchange', update);
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Y.attachEvent('onchange', update);
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I.attachEvent('onchange', update);
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K.attachEvent('onchange', update);
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} else {
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O.oninput = update;
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V.oninput = update;
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J.onchange = update;
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Y.onchange = update;
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I.onchange = update;
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K.onchange = update;
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}
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window.onload = function() { update(); };
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</script>
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<script type="text/javascript">
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var _gaq = _gaq || [];
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_gaq.push(['_setAccount', 'UA-36810333-1']);
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_gaq.push(['_trackPageview']);
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(function() {
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var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
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ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
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var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
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})();
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</script>
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</html>
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