flutter筛选,flutter selector

零基础开始学 Web 前端开发，有什么建议吗？

看你是想自学还是培训，自学不建议看书，视频效果会好很多，在学习的过程中你得边看边跟着写，这样才能从学到会，不然真的就是看了就是看了，到最后啥也没学会。

平罗网站建设公司创新互联公司,平罗网站设计制作，有大型网站制作公司丰富经验。已为平罗上千家提供企业网站建设服务。企业网站搭建\成都外贸网站建设要多少钱，请找那个售后服务好的平罗做网站的公司定做！

如果是培训的话，就需要楼楼多方面考察对比，比如课程内容，师资，学习模式等等，接下来我们就具体聊聊究竟如何去选择。

1、课程大纲

Web前端对于零基础的小伙伴也是非常友好的，好入门，上手快，可以立马看到学习效果，这也大大提高了学习的兴趣。但是并不是说前端没有技术含量，我们在选择培训机构时，课程内容不仅要包含前端基础，还要看看是否有vue.js、react.js、react-native和Flutter等主流框架，并扩展three.js、typescript等等技术，深挖、剖析框架原理。甚至了解后端的知识，这样在工作中才能减少沟通成本。

很多培训机构都会在官网展示自己的课程大纲，课程内容等等，将心仪机构的课程大纲截图下来，对比几家的课程大纲，去判断哪家的课程大纲、课程周期安排比较合理，内容深度广度是否适当。

2、是否安排免费试听

很多在线培训机构会将部分课程放在腾讯课堂、B站、自己的在线课堂，或者可以直接参加前期的免费试学。因为很多人目标不明确，甚至是迷茫的，所以先试听，看看自己是不是真的想从事Web前端这个岗位，以及是否适合做技术这个行业。其实最重要的是看看你是否能坚持，这种学习模式是否适合你。

3、教学力量

参加试听的过程，可以让你清楚这个讲师的水平或者是讲师的讲课风格是否适合自己。老师不一定需要是顶级大牛，但是一定要有足够的专业技能和项目经验，真正帮助学员成长。因为在线培训，老师和学员不能做到面对面沟通，这就要求讲师一定对学生有足够的耐心，细心，学员提出问题要及时解答等等。

4、学习模式

是否为直播授课，以及定期检验学习成果，比如月考，阶段考等等。在学习过程中是否有详细到每天的课程计划表？以及每天课程结束后是否有课后作业等等。线上课程由于管理的局限性，只有做到这样，才能全面增强学员的学习体验与老师的学习互动。

5、学习氛围

线上学习的学习氛围其实对于学员来说很重要，相对于线下学习，线上学习更多的是自主学习，那么如何去营造大家的学习氛围，这就需要培训机构有专门的人来组织，比如是否有专门的学习群，学员可以通过在群里讨论，老师批改作业等等方式来促进大家的学习积极性。好的学习氛围有约束力，能够让你不自觉的前进。

6、是否有班主任

最好是选择有班主任管理的线上学习机构，这样遇到问题也能够及时的处理。其实班主任最主要的功能还是督促你学习，因为在线学习很容易受到外界因素的干扰。如果没有班主任盯着你学习，你的学习进度，质量都会下降很多。

7、就业保障

我们在签订就业合同的时候，一定要注意是否有就业保障这一块，比如是否有就业方面培训课程，是否有就业老师负责就业？最后万一没有就业是怎么办？

关于如何筛选就跟大家啰嗦到这，有任何问题，欢迎私聊我，大家一起研讨~

5篇英语小作文（速度啊）好的追加

Winter color grandfather has packed off the earth severe coldness, spring the girl trod the lithe footsteps to arrive the world. The spring scenery is extremely beautiful, looks like a lifelike picture.

The spring sunlight is especially beautiful, spring the girl has launched the smiling face, the sun, the red light beam comes, that strokes you gently, likely young mother's hand.

Along with the spring girl's lively step, the blue grass, emerges as the times require, secretly drills from the earth, tender, green. In the park, everywhere all may see this some vitality tenacious grass.

In this warm season, in the woods, many trees all opened has filled the bright flowers; Everybody is not willing to yield mutually, red, yellow, white, purple, various flower really looks like a beautiful big flower-bed. Many butterflies and the honeybee have all smelled the colored fragrance, all as if by prior agreement flies picks the honey, flies round in the midair.

In the woods, many birds in happily are soaring freely, is happy, then sings the clear delightful song, the genial spring scenery sways the creek delightfully, the river water by one, the interesting to listen to whistle sound is being affected suddenly, takes a broad view looks, a group of mischievous child correct use weeping willow's stem makes the willow tree flute! They have blown out in the heart unhappiness and the joy.

The spring rain is gentle, sees only the spring rain in the bamboo, on the bamboo leaves is beating. That rain straight line falls from time to time, from time to time with the wind floats, leaves behind like the smoke, like the fog, like the gauze, like the silk beautiful figure, the splash rain flower as if is the note which on the qin xuan beats, plays the exquisite melody.

In the sky, how is colorful, causes the human to be dazzled? The original children are guarding against the kite. In under blue sky white clouds shining, various kite in is dancing in the breeze freely, is flying upwards, causes the human completely relaxed picture!

Spring all, all appear such full of vitality.

具体的范文模板

链接：链接:

?pwd=84a1 提取码: 84a1  

游泳时如何踩水？

这是一篇为了让自己学会“踩水”而给自己写的教程。也就是说，我现在不会踩水，文章里的内容是我在大量阅读资料的基础上，理解、整理和总结而来。因为缺少实战经验，本篇的“教程”或许稍显苍白。但是，我可以保证，虽然文章的内容缺乏个人验证，但是概率上来讲，我呈现出来的是多数资料里出现频率高的，并且我同时会列举出少数人的不同方法。文章中随附经过本人筛选过的网站，可方便查看，帮您省去再次筛选和查找的时间。

另一方面，本人正在练习过程中，这篇文章，会根据个人实践经验，对文章进行更新。让我们一起体会，“踩水”从笨拙到熟练的过程吧！

踩水：又称之为立泳，顾名思义是以直立的方式游泳。表现为：身体是垂直的，躯干不用力，通过手和脚的动作配合，让自己漂浮在水面上（头部露出水面，有人肩膀以上露出水面）。考取深水证时，需通过踩水，保持漂浮在水面上至少2分钟，方达到要求。

游泳时（浅水区除外）不会踩水，就如同没有刹车的车子。所以，踩水是每个人在学会游泳时首先应该学会的技巧，因为它是关键时刻用来保命的啊！只可惜，大部分人都是先在浅水区学会蛙泳之类的泳姿，等想去深水区游泳，才想起踩水来。所以，建议以后学习游泳的同学，一定先让教练学会踩水！

踩水是一个需要手脚配合的技巧，当然只依靠脚，也可以达到立在水面的效果。根据脚的动作，踩水可以分为三种：剪刀踢腿式踩水（Flutter Kick）、蛙式踢腿式踩水（Breaststroke Kick or frog kick）和打蛋式踩水（Eggbeater Kick）。还有人（百度百科）说“脚踏式踩水”，应对应的是剪刀踢腿式踩水（Flutter Kick）。

基本要点：保持镇定（不要慌），放慢呼吸（慌了呼吸就会快）。

PS：为了把中英文的解释对应起来，也是花了一番心思。总体来说，Google上用英文关键词“trending water”搜索，其对不同踩水方法的解释更加容易理解清楚。

手臂的动作 ：

手臂在水平方向前后划动，五指并拢，向前划时拇指向下，到终点时，用手向下按压，而后向后划，拇指朝上，这样就能使你的上半身保持向上，不会下沉。只依靠“双手”的划动，脚不动，可以使自己保持立在水面上。

有人说应该向斜后方，有人说应该是水平的，总归不是向下的。因为如果你上下划动手臂，会对脚的动作形成阻力。

要点：动作要流畅，手掌和小臂要有压摸水的感觉。

1.剪刀踢腿式（Flutter Kick）

这是最简单，但也是最容易疲累的姿势。

（还没弄明白动作是怎么回事，需要查证资料后补充。）

2.蛙式踢腿式踩水（Breaststroke Kick or Frog Kick）

比剪刀踢腿式踩水要轻松一些。

腿部动作几乎和蛙泳的腿部动作一样，有“收、翻、蹬、夹”四步。收腿时，膝关节可外翻，蹬腿时膝关节向内扣压，同时小腿和脚内侧蹬夹，两腿还未蹬直时，就应并拢并开始做第二次的收腿动作，动作要连贯。需要注意的是，它的收蹬腿的幅度比蛙泳小，夹水时，双腿没有完全伸直时，就应该收腿了。

大腿动作幅度较小，用小腿和脚内侧向侧下方蹬水蹬水后两腿不并拢，连续不断；

3.打蛋式踩水（Eggbeater Kick）

先屈右膝，小腿和脚向外翻，然后膝向里扣压，用右脚掌和右小腿内侧向侧下方蹬夹水，当腿尚未蹬直时向后上方收小腿，收腿的同时左腿开始做如同右腿的蹬夹水动作，两腿交替进行。

像打蛋器一样，快速用你的双腿划圆圈。两腿划圈的方向是相反的，即一个是顺时针，则另外一个是逆时针。

这个动作最难学会，但是最省力气，可以连续踩水几个小时也不会很累。

写作本文的收获：

1.认真阅读了笑来老师的google使用方法，虽然距离熟练使用Google的搜索技巧很远，但也没有想象中那么难。

2.仅仅依靠网上的资料，想整理一个教程是很复杂的，因为大部分帖子都是我抄别人，你抄我（英文网站也有这样的情况，看来偷懒是天下人的共性）。

3.实践过程中，会对内容进行更新。借用笑来老师的话，我不保证百分百的正确，但是我保证百分百的真诚！

【哈利波特精读】Harry Potter and the Sorcerer's Stone（Chapter 1）

Shirley老师带你精读《哈利波特》，体验魔法世界！

精读方法：

先听录音，读英文部分，不懂的地方暂停看词汇和翻译，查单词。

了解大意后，做盲听训练，直到能够听懂每个句子。

最后，生词和精彩的句子摘抄下来，单词要复习，句子要在写作的时候用上，多复习多使用才会巩固学习成果。

建议大家读纸质书或打印出来，方便划单词和句子、记笔记。

电子书等材料领取方式见作者介绍。

Chapter One The Boy Who Lived

大难不死的男孩

语境词汇

The Dursleys shuddered to think what the neighbors would say if the Potters arrived in the street.

shudder ['ʃʌdə]

n.发抖；战栗；震动 vi.发抖；战栗

None of them noticed a large, tawny owl flutter past the window.

tawny ['tɔːnɪ]

n.黄褐色；茶色 adj.黄褐色的；茶色的

flutter ['flʌtə]

vi.飘动；鼓翼；烦扰 vt.拍；使焦急；使飘动n.摆动；鼓翼；烦扰

"Little tyke," chortled Mr. Dursley as he left the house.

chortle ['tʃɔːt(ə)l]

vi.咯咯笑 n.得意的高笑

It was on the corner of the street that he noticed the first sign of something peculiar -- a cat reading a map.

peculiar [pɪ'kjulɪɚ]

adj. 特殊的；独特的；奇怪的；罕见的 n. 特权；特有财产

There was a tabby cat standing on the corner of Privet Drive, but there wasn't a map in sight.

tabby ['tæbɪ]

n.平纹；斑猫；长舌妇 adj.起波纹的；有斑纹的 vt.使起波纹

Mr. Dursley couldn't bear people who dressed in funny clothes -- the getups you saw on young people!

getup ['ɡetʌp]

n.服饰，式样；装订格式

But then it struck Mr. Dursley that this was probably some silly stunt — these people were obviously collecting for something…

stunt [stʌnt]

n.噱头，手腕；绝技vt.阻碍…的正常生长或发展vi.表演特技；作惊人表演     

He didn't see the owls swooping past in broad daylight, though people down in the street did; they pointed and gazed open-mouthed as owl after owl sped overhead.

swoop [swuːp]

vi.猛扑；突然袭击 n.猛扑；俯冲；突然袭击vt.攫取；抓起

It was on his way back past them, clutching a large doughnut in a bag, that he caught a few words of what they were saying.

clutch [klʌtʃ]

n.离合器；控制；手；紧急关头

vi.企图抓住vt.抓住；紧握 adj.没有手提带或背带的；紧要关头的

"Sorry," he grunted, as the tiny old man stumbled and almost fell.

grunt [grʌnt]

n.咕哝；呼噜声vi.作呼噜声；发哼声vt.咕哝着说

stumble /ˈstʌmbl/

vi. 踌躇，蹒跚；失足；犯错vt. 使…困惑；使…绊倒n. 绊倒；蹒跚而行

He was rattled.

rattle ['ræt(ə)l]

vt.使发出咯咯声；喋喋不休；使慌乱，使惊慌

vi.喋喋不休地讲话；发出卡嗒卡嗒声 n.喋喋不休的人；吓吱声，格格声

The newscaster allowed himself a grin.

grin [grɪn]

v.露齿而笑，咧着嘴笑n.露齿笑

Mrs. Dursley sipped her tea through pursed lips.

purse /pɜːs/

n. (女士)手提袋；财力 vt.（嘴巴）皱起，使缩拢；撅嘴

It didn't so much as quiver when a car door slammed on the next street, nor when two owls swooped overhead.

quiver /ˈkwɪvə(r)/

n. 颤抖；箭袋；震动vi. 颤抖；振动vt. 使…颤动；抖动

The cat's tail twitched and its eyes narrowed.

twitch [twɪtʃ]

n.抽搐；抽动；痉挛；阵痛 vi.抽搐；抽动；阵痛vt.使抽动；攫取；猛拉

He chuckled and muttered, "I should have known."

chuckle ['tʃʌk(ə)l]

vi.咯咯的笑，轻声地笑n.轻笑，窃笑vt.轻声笑着表示

She looked distinctly ruffled.

ruffle ['rʌf(ə)l]

vt.弄皱；触怒；扰乱；迅速翻动 vi.起皱；烦恼；连续地轻敲

n.皱褶；生气；混乱；连续轻敲声

Professor McGonagall flinched, but Dumbledore, who was unsticking two lemon drops, seemed not to notice.

flinch ['flɪn(t)ʃ]

vi.退缩；畏惧n.退缩；畏惧

"I know you haven't, said Professor McGonagall, sounding half exasperated, half admiring.

exasperate [ɪg'zæsp(ə)reɪt; eg-]

vt.恶化；使恼怒；激怒

Professor McGonagall gasped.

gasp [gɑːsp]

vi.喘气；喘息；渴望vt.气喘吁吁地说；喘着气说话n.喘气

Professor McGonagall's voice trembled as she went on.

tremble /ˈtrembl/

vi. 发抖；焦虑；摇晃vt. 使挥动；用颤抖的声音说n. 颤抖；战栗；摇晃

Dumbledore nodded glumly.

glumly ['glʌmli]

adv.忧郁地；闷闷不乐地（glum的副词）

"It's -- it's true?" faltered Professor McGonagall.

falter ['fɔːltə; 'fɒl-]

vi.支吾；蹒跚地走vt.支吾地说；结巴地讲出n.踌躇；支吾；颤抖

It's just astounding... of all the things to stop him... but how in the name of heaven did Harry survive?"

astounding [ə'staʊndɪŋ]

adj.令人震惊的；令人惊骇的

"A letter?" repeated Professor McGonagall faintly, sitting back down on the wall.

faint /feɪnt/

adj. 模糊的；头晕的；虚弱的；[医] 衰弱的

vi. 昏倒；变得微弱；变得没气力n. [中医] 昏厥，昏倒

"I'm not saying his heart isn't in the right place," said Professor McGonagall grudgingly, "but you can't pretend he's not careless. He does tend to -- what was that?"

grudge [grʌdʒ]

vt.怀恨；吝惜；妒忌；不情愿做 n.怨恨；恶意；妒忌

A low rumbling sound had broken the silence around them.

rumble ['rʌmb(ə)l]

vt.使隆隆响；低沉地说vi.隆隆作响n.隆隆声；抱怨声

"No, sir -- house was almost destroyed, but I got him out all right before the Muggles started swarmin' around. He fell asleep as we was flyin' over Bristol."

swarm [swɔːm]

vi.挤满；成群浮游；云集 n.蜂群；一大群 vt.挤满；爬

Under a tuft of jet-black hair over his forehead they could see a curiously shaped cut, like a bolt of lightning.

bolt [bəʊlt]

n.螺栓，螺钉；闪电，雷电；门闩；弩箭;（布的）一匹，一卷

vt.筛选；囫囵吞下；（把门、窗等）闩上；突然说出，脱口说出

vi.（门窗等）闩上，拴住；冲出，跳出；（马等的）脱缰；囫囵吞下

adv.突然地；像箭似地；直立地

He bent his great, shaggy head over Harry and gave him what must have been a very scratchy, whiskery kiss.

shaggy ['ʃægɪ]

adj.蓬松的；表面粗糙的；毛发粗浓杂乱的

whiskery ['hwiskəri]

adj.年长的；有须的；古老的

"Yes, yes, it's all very sad, but get a grip on yourself, Hagrid, or we'll be found," Professor McGonagall whispered, patting Hagrid gingerly on the arm as Dumbledore stepped over the low garden wall and walked to the front door.

gingerly ['dʒɪndʒəlɪ]

adv.小心翼翼地；慎重地adj.谨慎的；轻手轻脚的；慎重的

"Yeah," said Hagrid in a very muffled voice, "I'll be takin' Sirius his bike back. G'night, Professor McGonagall -- Professor Dumbledore, sir."

muffle /ˈmʌfl/

vt. 蒙住；裹住；抑制；发低沉的声音

n. 低沉的声音；消声器；包裹物（如头巾，围巾等）；唇鼻部

He clicked it once, and twelve balls of light sped back to their street lamps so that Privet Drive glowed suddenly orange and he could make out a tabby cat slinking around the corner at the other end of the street.

slink [slɪŋk]

vi.潜逃；溜走vt.早产；潜逃n.早产的动物；鬼鬼祟祟的人adj.早产的

One small hand closed on the letter beside him and he slept on, not knowing he was special, not knowing he was famous, not knowing he would be woken in a few hours' time by Mrs. Dursley's scream as she opened the front door to put out the milk bottles, nor that he would spend the next few weeks being prodded and pinched by his cousin Dudley...

prod [prɒd]

n.刺针；刺棒；签子vt.刺，戳；刺激vi.刺；捅

pinch [pɪn(t)ʃ]

vt.捏；勒索；使苦恼；掐掉某物，修剪n.匮乏；少量；夹痛vi.夹痛；节省

精彩句型

Fear flooded him.

描写恐惧，或替换成其他情绪。

He dashed back across the road, hurried up to his office, snapped at his secretary not to disturb him, seized his telephone, and had almost finished dialing his home number when he changed his mind.

描写一连串急躁的动作，这一段很德思礼。

On the contrary, his face split into a wide smile and he said in a squeaky voice that made passersby stare, "Don't be sorry, my dear sir, for nothing could upset me today! Rejoice, for You-Know-Who has gone at last! Even Muggles like yourself should be celebrating, this happy, happy day!"

这是本书第一次提到，伏地魔消失了！麻瓜也应该高兴！

Mr. Dursley stood rooted to the spot.

关于惊呆的描写。

How very wrong he was.

德思礼以为波特一家绝不会与他有任何的联系，谁知道第二天早上的门垫子上，一个额头上带着伤疤的小男孩，与他开始了密不可分的关系……

Nothing like this man had ever been seen on Privet Drive. He was tall, thin, and very old, judging by the silver of his hair and beard, which were both long enough to tuck into his belt. He was wearing long robes, a purple cloak that swept the ground, and high-heeled, buckled boots. His blue eyes were light, bright, and sparkling behind half-moon spectacles and his nose was very long and crooked, as though it had been broken at least twice. This man's name was Albus Dumbledore.

最伟大的巫师，阿不思邓布利多，第一次出场。外貌描写很传神。

It was plain that whatever "everyone" was saying, she was not going to believe it until Dumbledore told her it was true.

麦格教授，以及很多巫师，都只会相信邓布利多。

"Lily and James... I can't believe it... I didn't want to believe it... Oh, Albus..." Dumbledore reached out and patted her on the shoulder. "I know... I know..." he said heavily.

描写难过与安慰。莉莉和詹姆斯，哈利波特的父母，去世了。

"We can only guess," said Dumbledore. "We may never know."

邓布利多教授在大多数时候，总是如此谨慎。

"Exactly," said Dumbledore, looking very seriously over the top of his half-moon glasses. "It would be enough to turn any boy's head. Famous before he can walk and talk! Famous for something he won't even remember! Can't you see how much better off he'll be, growing up away from all that until he's ready to take it?"

关于哈利波特为什么要留在德思礼家，邓布利多给出的解释。

“I would trust Hagrid with my life," said Dumbledore.

邓布利多对海格的信任。

If the motorcycle was huge, it was nothing to the man sitting astride it. He was almost twice as tall as a normal man and at least five times as wide. He looked simply too big to be allowed, and so wild - long tangles of bushy black hair and beard hid most of his face, he had hands the size of trash can lids, and his feet in their leather boots were like baby dolphins. In his vast, muscular arms he was holding a bundle of blankets.

海格第一次出场。

For a full minute the three of them stood and looked at the little bundle; Hagrid's shoulders shook, Professor McGonagall blinked furiously, and the twinkling light that usually shone from Dumbledore's eyes seemed to have gone out.

邓布利多，麦格教授，海格，一起凝视着还是个婴儿的哈利波特。

"Good luck, Harry," he murmured. He turned on his heel and with a swish of his cloak, he was gone.

邓布利多对哈利说的第一句话，也是第一次道别。

Flutter Column嵌套Listview不能滚动的问题

如果做这个筛选界面的时候，刚开始最外层用Column嵌套一个Container(红色部分)和ListView。

然后每个Item也是Column嵌套一个Container（大分类）

和GridView(小分类) 。出现的问题就是不能滚动。

在Listview和GridView外面嵌套一个Expanded，不能滚动是因为Container尺寸计算的问题，Expande就是listview有多大就有多大。

Item嵌套

前端开发必学的技术有哪些？

这里给大家整理了一份系统全面的前端学习路线，主要掌握以下技术：

第一阶段：专业核心基础

阶段目标：

1. 熟练掌握HTML5、CSS3、Less、Sass、响应书布局、移动端开发。

2. 熟练运用HTML+CSS特性完成页面布局。

4. 熟练应用CSS3技术，动画、弹性盒模型设计。

5. 熟练完成移动端页面的设计。

6. 熟练运用所学知识仿制任意Web网站。

7. 能综合运用所学知识完成网页设计实战。

知识点：

1、Web前端开发环境，HTML常用标签，表单元素，Table布局，CSS样式表，DIV+CSS布局。熟练运用HTML和CSS样式属性完成页面的布局和美化，能够仿制任意网站的前端页面实现。

2、CSS3选择器、伪类、过渡、变换、动画、字体图标、弹性盒模型、响应式布局、移动端。熟练运用CSS3来开发网页、熟练开发移动端，整理网页开发技巧。

3、预编译css技术：less、sass基础知识、以及插件的运用、BootStrap源码分析。能够熟练使用 less、sass完成项目开发，深入了解BootStrap。

4、使用HTML、CSS、LESS、SASS等技术完成网页项目实战。通过项目掌握第一阶段html、css的内容、完成PC端页面设计和移动端页面设计。

第二阶段：Web后台技术

阶段目标:

1. 了解JavaScript的发展历史、掌握Node环境搭建及npm使用。

2. 熟练掌握JavaScript的基本数据类型和变量的概念。

3. 熟练掌握JavaScript中的运算符使用。

4. 深入理解分之结构语句和循环语句。

5. 熟练使用数组来完成各种练习。

6.熟悉es6的语法、熟练掌握JavaScript面向对象编程。

7.DOM和BOM实战练习和H5新特性和协议的学习。

知识点：

1、软件开发流程、算法、变量、数据类型、分之语句、循环语句、数组和函数。熟练运用JavaScript的知识完成各种练习。

2、JavaScript面向对象基础、异常处理机制、常见对象api，js的兼容性、ES6新特性。熟练掌握JavaScript面向对象的开发以及掌握es6中的重要内容。

3、BOM操作和DOM操作。熟练使用BOM的各种对象、熟练操作DOM的对象。

4、h5相关api、canvas、ajax、数据模拟、touch事件、mockjs。熟练使用所学知识来完成网站项目开发。

第三阶段：数据库和框架实战

阶段目标：

1. 综合运用Web前端技术进行页面布局与美化。

2. 综合运用Web前端开发框架进行Web系统开发。

3. 熟练掌握Mysql、Mongodb数据库的发开。

4. 熟练掌握vue.js、webpack、elementui等前端框技术。

5. 熟练运用Node.js开发后台应用程序。

6. 对Restful，Ajax，JSON，开发过程有深入的理解,掌握git的基本技能。

知识点：

1、数据库知识，范式，MySQL配置，命令，建库建表，数据的增删改查，mongodb数据库。深入理解数据库管理系统通用知识及MySQL数据库的使用与管理，为Node.js后台开发打下坚实基础。

2、模块系统，函数，路由，全局对象，文件系统，请求处理，Web模块，Express框架，MySQL数据库处理，RestfulAPI，文件上传等。熟练运用Node.js运行环境和后台开发框架完成Web系统的后台开发。

3、vue的组件、生命周期、路由、组件、前端工程化、webpack、elementui框架。Vue.js框架的基本使用有清晰的理解，能够运用Vue.js完成基础前端开发、熟练运用Vue.js框架的高级功能完成Web前端开发和组件开发，对MVVM模式有深刻理解。

4、需求分析，数据库设计，后台开发，使用vue、node完成pc和移动端整站开发。于Node.js+Vue.js+Webpack+Mysql+Mongodb+Git，实现整站项目完整功能并上线发布。

第四阶段：移动端和微信实战

阶段目标：

1.熟练掌握React.js框架，熟练使用React.js完成开发。

2.掌握移动端开发原理，理解原生开发和混合开发。

3.熟练使用react-native和Flutter框架完成移动端开发。

4.掌握微信小程序以及了解支付宝小程序的开发。

5.完成大型电商项目开发。

知识点：

1、React面向组件编程、表单数据、组件通信、监听、声明周期、路由、Redux基本概念。练使用react完成项目开发、掌握Redux中的异步解决方案Saga。

2、react-native、开发工具、视图与渲染、api操作、Flutter环境搭建、路由、ListView组件、网络请求、打包。练掌握react-native和Flutter框架，并分别使用react-native和Flutter分别能开发移动端项目。

3、微信小程序基本介绍、开发工具、视图与渲染、api操作、支付宝小程序的入门和api学习。掌握微信小程序开发了解支付宝小程序。

4、大型购物网站实战，整个项目前后端分离开发；整个项目分为四部分：PC端网页、移动端APP、小程序、后台管理。团队协作开发，使用git进行版本控制。目期间可以扩展Three.js 、TypeScript。