blockly/demos/generator/index.html
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Blockly Demo: Generating JavaScript</title>
<script type="text/javascript" src="../../blockly_compressed.js"></script>
<script type="text/javascript" src="../../blocks_compressed.js"></script>
<script type="text/javascript" src="../../javascript_compressed.js"></script>
<script type="text/javascript" src="../../msg/js/en.js"></script>
<style>
body {
background-color: #fff;
font-family: sans-serif;
}
h1 {
font-weight: normal;
font-size: 140%;
}
</style>
</head>
<body>
<h1><a href="https://blockly.googlecode.com/">Blockly</a> >
<a href="../index.html">Demos</a> > Generating JavaScript</h1>
<p>This is a simple demo of generating code from blocks.</p>
<p>→ More info on <a href="https://code.google.com/p/blockly/wiki/LanguageGenerators">Language Generators</a>...</p>
<p>
<button onclick="showCode()">Show JavaScript</button>
<button onclick="runCode()">Run JavaScript</button>
</p>
<div id="blocklyDiv" style="height: 480px; width: 600px;"></div>
<xml id="toolbox" style="display: none">
<category name="Logic">
<block type="controls_if"></block>
<block type="logic_compare"></block>
<block type="logic_operation"></block>
<block type="logic_negate"></block>
<block type="logic_boolean"></block>
</category>
<category name="Loops">
<block type="controls_repeat_ext">
<value name="TIMES">
<block type="math_number">
<field name="NUM">10</field>
</block>
</value>
</block>
<block type="controls_whileUntil"></block>
</category>
<category name="Math">
<block type="math_number"></block>
<block type="math_arithmetic"></block>
<block type="math_single"></block>
</category>
<category name="Text">
<block type="text"></block>
<block type="text_length"></block>
<block type="text_print"></block>
</category>
</xml>
<script>
Blockly.inject(document.getElementById('blocklyDiv'),
{path: '../../', toolbox: document.getElementById('toolbox')});
function showCode() {
// Generate JavaScript code and display it.
Blockly.JavaScript.INFINITE_LOOP_TRAP = null;
var code = Blockly.JavaScript.workspaceToCode();
alert(code);
}
function runCode() {
// Generate JavaScript code and run it.
window.LoopTrap = 1000;
Blockly.JavaScript.INFINITE_LOOP_TRAP =
'if (--window.LoopTrap == 0) throw "Infinite loop.";\n';
var code = Blockly.JavaScript.workspaceToCode();
Blockly.JavaScript.INFINITE_LOOP_TRAP = null;
try {
eval(code);
} catch (e) {
alert(e);
}
}
</script>
</body>
</html>