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136 lines
4.3 KiB
136 lines
4.3 KiB
<!DOCTYPE html>
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<html>
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<head>
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<title>Dukweb.js test</title>
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<script type="text/javascript" src="dukweb.js"></script>
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<script type="text/javascript" src="jquery-1.11.2.js"></script>
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<link href="dukweb.css" rel="stylesheet" type="text/css"/>
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</head>
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<body>
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<h1>((o) Dukweb.js test</h1>
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<div id="content-middle">
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<p id="dukweb-intro">Works in Chrome/Chromium/Firefox. There is much to
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improve in the Duktape/browser bindings and errors are not handled nicely
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yet, so keep your Javascript Console open. Also note that this page takes
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a few seconds to (re)load. You can embed code in the Dukweb link as a
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fragment identifier: <a href="http://duktape.org/dukweb.html#print('Hello%20world!')%3B">http://duktape.org/dukweb.html#print('Hello%20world!')%3B</a>.</p>
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<div id="dukweb-input-wrapper">
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<textarea id="dukweb-input">
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// This code runs inside the Duktape VM, print() and alert() are bound so
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// that they integrate with the browser environment: output is written to
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// the text area below.
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print('Duktape version is ' + Duktape.version);
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alert('alert from Duktape code');
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print(Duktape.enc('jx', { foo: 1, bar: 'xxx', quux: Uint8Array.allocPlain('foo') }));
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var obj = {};
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Duktape.fin(obj, function () { print('obj finalized'); });
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obj = null;
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// The Dukweb object provides bindings to access the underlying web
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// environment. Most importantly, you can use Dukweb.eval() to run
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// code in the browser.
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Dukweb.eval('alert("your browser userAgent is: " + navigator.userAgent.toString())');
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</textarea>
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</div>
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<div id="dukweb-evaluate-wrapper">
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<span id="dukweb-evaluate"><span>Evaluate</span></span>
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</div>
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<div id="dukweb-output-wrapper">
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<pre id="dukweb-output">
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</pre>
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</div>
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<script type="text/javascript">
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//<![CDATA[
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function dukwebSetup() {
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if (typeof Duktape !== 'object') {
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throw new Error('initialization failed (Duktape is undefined)');
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}
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if (!Duktape.initSuccess) {
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throw new Error('initialization failed (initSuccess is false)');
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}
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// Override handlers for Duktape print() and alert() replacements, because
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// we want to redirect output in our own way.
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var dukwebOutput = [];
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function dukwebAppendOutput(txt) {
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var oldtxt = $('#dukweb-output').text();
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var newtxt = oldtxt + txt; // find out a better way
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$('#dukweb-output').text(newtxt);
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}
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Duktape.printHandler = function(msg) {
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dukwebAppendOutput(msg + '\n');
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}
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Duktape.alertHandler = function(msg) {
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alert(msg);
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}
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$('#dukweb-evaluate').click(function () {
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$('#dukweb-output').text('');
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dukwebOutput = [];
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var code = $('#dukweb-input').val();
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if (code.length < 65536 && location) {
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// Although Firefox automatically decodes location.hash, this
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// still seems to work.
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location.hash = encodeURIComponent(code);
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}
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setTimeout(function () {
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try {
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var res = Duktape.eval(code);
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dukwebAppendOutput('==> ' + res + '\n');
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} catch (e) {
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dukwebAppendOutput('==> ' + (e.stack || e) + '\n');
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}
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}, 1); // sleep to allow hash to update immediately
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});
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}
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$(document).ready(function () {
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function checkUriCode() {
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// In some browsers location.hash is automatically decoded and in
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// others it is not. This is more portable:
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// http://stackoverflow.com/questions/4835784/firefox-automatically-decoding-encoded-parameter-in-url-does-not-happen-in-ie
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if (location && location.href && location.href.indexOf('#') >= 0) {
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var code = location.href.substring(location.href.indexOf('#') + 1);
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$('#dukweb-input').val(decodeURIComponent(code));
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}
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/*
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if (location && location.hash && location.hash[0] === '#') {
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$('#dukweb-input').val(decodeURIComponent(location.hash.substring(1)));
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}
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*/
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}
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try {
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checkUriCode();
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} catch (e) {
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alert(e);
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}
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try {
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dukwebSetup();
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} catch (e) {
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$('#dukweb-output')
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.addClass('error')
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.text(
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'Dukweb.js initialization failed (perhaps your browser is not compatible?):\n\n' +
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String(e.stack || e) + '\n\n');
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}
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});
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//]]>
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</script>
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</div> <!-- content-middle -->
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</body>
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</html>
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