mirror of
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146 lines
4.3 KiB
HTML
146 lines
4.3 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<title>Blockly Demo: Generating JavaScript</title>
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<script src="../../blockly_compressed.js"></script>
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<script src="../../blocks_compressed.js"></script>
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<script src="../../javascript_compressed.js"></script>
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<script src="../../msg/js/en.js"></script>
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<style>
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body {
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background-color: #fff;
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font-family: sans-serif;
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}
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h1 {
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font-weight: normal;
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font-size: 140%;
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}
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</style>
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</head>
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<body>
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<h1><a href="https://developers.google.com/blockly/">Blockly</a> >
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<a href="../index.html">Demos</a> > Generating JavaScript</h1>
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<p>This is a simple demo of generating code from blocks.</p>
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<p>→ More info on <a href="https://developers.google.com/blockly/installation/code-generators">Code Generators</a>…</p>
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<p>
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<button onclick="showCode()">Show JavaScript</button>
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<button onclick="runCode()">Run JavaScript</button>
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</p>
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<div id="blocklyDiv" style="height: 480px; width: 600px;"></div>
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<xml id="toolbox" style="display: none">
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<category name="Logic">
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<block type="controls_if"></block>
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<block type="logic_compare"></block>
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<block type="logic_operation"></block>
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<block type="logic_negate"></block>
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<block type="logic_boolean"></block>
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</category>
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<category name="Loops">
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<block type="controls_repeat_ext">
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<value name="TIMES">
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<block type="math_number">
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<field name="NUM">10</field>
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</block>
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</value>
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</block>
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<block type="controls_whileUntil"></block>
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</category>
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<category name="Math">
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<block type="math_number"></block>
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<block type="math_arithmetic"></block>
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<block type="math_single"></block>
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</category>
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<category name="Text">
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<block type="text"></block>
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<block type="text_length"></block>
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<block type="text_print"></block>
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</category>
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</xml>
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<xml id="startBlocks" style="display: none">
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<block type="controls_if" inline="false" x="20" y="20">
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<mutation else="1"></mutation>
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<value name="IF0">
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<block type="logic_compare" inline="true">
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<field name="OP">EQ</field>
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<value name="A">
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<block type="math_arithmetic" inline="true">
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<field name="OP">MULTIPLY</field>
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<value name="A">
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<block type="math_number">
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<field name="NUM">6</field>
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</block>
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</value>
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<value name="B">
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<block type="math_number">
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<field name="NUM">7</field>
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</block>
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</value>
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</block>
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</value>
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<value name="B">
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<block type="math_number">
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<field name="NUM">42</field>
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</block>
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</value>
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</block>
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</value>
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<statement name="DO0">
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<block type="text_print" inline="false">
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<value name="TEXT">
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<block type="text">
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<field name="TEXT">Don't panic</field>
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</block>
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</value>
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</block>
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</statement>
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<statement name="ELSE">
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<block type="text_print" inline="false">
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<value name="TEXT">
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<block type="text">
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<field name="TEXT">Panic</field>
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</block>
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</value>
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</block>
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</statement>
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</block>
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</xml>
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<script>
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var workspace = Blockly.inject('blocklyDiv',
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{media: '../../media/',
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toolbox: document.getElementById('toolbox')});
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Blockly.Xml.domToWorkspace(document.getElementById('startBlocks'),
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workspace);
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function showCode() {
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// Generate JavaScript code and display it.
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Blockly.JavaScript.INFINITE_LOOP_TRAP = null;
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var code = Blockly.JavaScript.workspaceToCode(workspace);
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alert(code);
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}
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function runCode() {
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// Generate JavaScript code and run it.
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window.LoopTrap = 1000;
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Blockly.JavaScript.INFINITE_LOOP_TRAP =
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'if (--window.LoopTrap == 0) throw "Infinite loop.";\n';
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var code = Blockly.JavaScript.workspaceToCode(workspace);
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Blockly.JavaScript.INFINITE_LOOP_TRAP = null;
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try {
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eval(code);
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} catch (e) {
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alert(e);
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}
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}
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</script>
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</body>
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</html>
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