师傅捉两个bug,
1.变量拼接
console.log(5+[6,6]); //56,3 -》 56,6

2.ES6模板字符串

var yake = "daigua";
console.log(hello ${yake});

//Uncaught SyntaxError: missing ) after argument list
跟图片那个代码不一样,输出报错