求大神修改下生成的代码

Question

Blockly.Blocks['sound_recognition'] = {
init: function() {
this.appendDummyInput()
.appendField("Speech Synthesis");
this.appendDummyInput()
.appendField("Choose Language：")
.appendField(new Blockly.FieldDropdown([["US English Male","E"], ["Chinese Female","CF"], ["Chinese Male","CM"], ["Korean Female","K"]]), "lang_");
this.appendStatementInput("recognition_");
this.setPreviousStatement(true);
this.setNextStatement(true);
this.setColour(230);
this.setTooltip("");
this.setHelpUrl("");
}
};
Blockly.JavaScript['sound_recognition'] = function(block) {
dropdown_lang_ = block.getFieldValue('lang_');
var statements_recognition_ = Blockly.JavaScript.statementToCode(block, 'recognition_');
if(dropdown_lang_=="E"){
responsiveVoice.setDefaultVoice("US English Male");
var code=responsiveVoice.speak(statements_recognition_);
}
return code;

};

Answer 1

statements_recognition_这个变量如果是字符串的话，作为参数时需要用引号的。字符串拼接用双引号，内部参数用双引号；或者相反。这是个小的js编写技巧。可以自己体会一下。