variables

Language Code:

Blockly.Blocks['variable'] = {
  init: function() {
    this.appendValueInput("var")
        .appendField(new Blockly.FieldDropdown([["int", "int"], ["bool", "bool"], ["string", "string"]]), "var_dic");
    this.setColour(90);
    this.setTooltip('');
    this.setHelpUrl('http://www.example.com/');
  }
};

Generator Stub:

Blockly.JavaScript['variable'] = function(block) {
  var dropdown_var_dic = block.getFieldValue('var_dic');
  var value_var = Blockly.JavaScript.valueToCode(block, 'var', Blockly.JavaScript.ORDER_ATOMIC);
  // TODO: Assemble JavaScript into code variable.
  var code = '...';
  return code;
};