命名更改小结：下划线转驼峰，或驼峰转下划线

1、下划线转驼峰

const toCamel = str =>str.replace(/([^_])(?:_+([^_]))/g, (_,p1, p2)=>p1+p2.toUpperCase());

2、驼峰转下划线

const toLowerLine = str =>str.replace(/[A-Z]/g, match=>"_"+match.toLowerCase());

3、打印结果：

console.log(toCamel("__to_make__something_wonderfull_"));
console.log(toLowerLine("whatIsYourName"));

附一张图来解释正则