题解 | 判断版本

const _shouldUpdate = (oldVersion, newVersion) => {
                // 补全代码
                newVersion = newVersion.split('.');
                oldVersion = oldVersion.split('.');
                if(newVersion.length > oldVersion.length){
                    return true
                } else if (newVersion.length === oldVersion.length){
                    for(let i = 0; i <= newVersion.length; i++){
                        if(+newVersion[i] > +oldVersion[i]) return true;
                    }
                }
                return false;
            }