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大部分人学习一项技术肯定是以就业为目标，那么学习web前端哪些知识才能找到一份工作？小蜗这里根据行业的变化以及企业的用人需求，整理了一份web前端的学习路线，只要掌握了以下内容，找到一份工作基本不难。
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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。
web前端学习路线思维导图
需要雄厚的资金，至少服务器是自己买，ISP是自己办。
违规的话一般都会中断服务，严重的搬服务器，所以一定要管好自己的服务器。
办IDC是很严肃的事情，需要很多经验才能办的来，建议你招聘老员工
不妨看看泰戈尔的诗，很多精简却优美。
闲荡的夏鸟来到我们的窗前啼唱又飞去。
枯黄的秋叶没有歌声，随着一声轻叹旋舞坠落。
Stray birds of summer come to my window to sing and fly away .
And yellow leaves of autumn,which have no songs.flutter and fall there with a sigh.
若你因错失太阳而流泪，你也会错失繁星。
If you shed tears when you miss the sun,you also miss the stars.
生命因尘世的需求而发现自身的财富，因爱情的需求而寻到自己的价值。
Life finds its wealth by the claims of the world, and its worth by the claims of love.
舞动e68a84e8a2ade799bee5baa631333335303530的溪水呀，沿途的砂砾在讨要你的欢歌和流淌。你愿意载走它们这残缺的重负吗？
The sands in you way beg for you song and you movement ,dancing water.
Will you carry the burden of their lameness?
她那渴求的芳容在我的梦乡萦绕，恰似这静夜的雨丝。
Her wistful face haunts my dreams like the rain at night.
我们在梦里曾是陌生人。梦醒后发现我们原本相亲相爱。
Once we dreamt that we were strangers.
BBC直播北京奥运会开幕式解说词
Sue Barker: Good afternoon. In case you are wondering that how important the Olympic Games are and that what it means to the athletes then those three “wise men” should know since they have been to twelve Olympic Games between them. So let’s say we are here in Beijing and we are now in this magnificent ninety-one thousand seats stadium. It’s the national stadium; it’s affectionately known as “the Bird’s Nest”. We are preparing for what is promised to be, a truly spectacular opening ceremony. It won’t start though until 8 o’clock as promised, 8 o’clock local time on the 8th day of the 8th month, 2008. So you won’t miss a thing.
But now for many years have sport and politics had such an uneasy unbalance. There has been political conflict; there have been international protest and environmental fears. As well, there has been so much debate since the People’s Republic of China and Beijing were awarded the games back in 2001. Huw, the world is watching China around Beijing, can you put these games into political contexts for us please?
Huw Edwards: Well, Sue, this is quite something. This is basically China saying to the world: we arrived; we are a 21st-century super power; we can do the best Olympics ever. They spent 40 billion dollars on these games. Nothing can go wrong as far as they are concerned.
Sue Barker: Carrie, Can you tell us what the Games means to people in China?
Carrie Gracie: Well, as far as I can see, people here are really not exposed to the negative messages we have been talking about: the protest, the environment worries, the heavy-handed security. Most people are proud. They are ready to party after seven years of getting ready.
Sue Barker: There are other issues involved here, Michael. For example, President Bush is here for the Opening Ceremony tonight. For the first time the American president is on the foreign soil for opening ceremony. What has been the reaction to that back home in the United States?
Michael Johnson (4-time Olympic champion (1992-2000)): I don’t think many people are really so surprised that he decided to come here, and I think his decision is less political. I think he probably made the personal decision that he wanted to take advantage of the opportunity to come here, to see this and to be a part of the ceremony, regardless of anyone thinks back at home.
Huw Edwards: This is how the Games of the 29th Olympiad are beginning. 2008 drummers are beating the count-down in a way that has never been before. The drummers themselves are producing remarkable electrifying effect.
Sue Barker: These are the full drums calling up the ancestor 4000 years old, 2008 of them.
Huw Edwards: They are waiting for the signal, for the final count-down that Beijing has been waiting for seven years. A minute to go.
Huw Edwards: The Bird’s Nest stadium is filled by energy of these drummers with the very precise message carried.
Sue Barker: Yes. The message is from Confucius saying two and half thousand years old. “Friends come from the far. How happy we are!”
Huw Edwards: This is the bird’s-eye view across the centre of Beijing. The fireworks are creating burning footprints all the way from the Tian’anmen Square, up the central axis, to the Olympic Green and the neo National Stadium.
Sue Barker: So much resonance to the imperial China here. The Confucius, who of course was taboo during the years of the revolution, now is back in style. So are these imperial accesses right through the Forbidden City, and all the identifying marks of five thousand years of the united imperial history.
Huw Edwards: There will be twenty thousand fireworks used for doing this opening ceremony, and the dust creates the Olympic rings. Five rings represent the five continents, the symbol of Olympic unity, unity of mankind in sport.
Sue Barker: You can see the performers suspended, floating through the air and coming down from the huge wires attached to the roof of this stadium. What is worth mentioning is this is a kind of 21st-century take-on of Buddhist figures you find on the walls of caves of Dunhuang. This is the reference to China’s huge northwestern Tang Dynasty spread of the Silk Road.
Huw Edwards: The rings, which are magically made of dust, now somehow raise in this stadium, indicating the arrival of the Olympics in China.
Carrie Gracie: The genius behind this very original opening ceremony, Zhang Yimou, is very much back in now. In a way, he is the story of contemporary China. He told us the other day that he wanted this ceremony to say to the world: romance, family.
Huw Edwards: What he also says is that China is very proud of its 5000 years of civilization. It is not afraid to modernize.
(After the raising of Chinese national flag)
Another spectacular display of fireworks, not just over the Olympic Stadium but over the city. The red flag flutters inside the national stadium. Is the red flag saying something about Chinese history as well, Carrie?
Carrie Gracie: Well, yes, because that’s about what all we are going to say about Chinese Communism in this opening ceremony. The five stars on the flag signify the unity of the country and the leadership of Chinese Communist Party. But we are going to say about a lot more of this kind of images, the traditional, the calligraphy, the culture, the sophistication of ancient China.
Huw Edwards: Indeed. What’s now going to happen is that we are going to enjoy different phases of Chinese history, different aspects of Chinese culture, some of them quieter, some of them on a very big scale.
Very clever is the way they led us from the little film introducing the theme of the scroll to this actual scroll, which is on the floor of this arena. It measures at least 25 meters in width and the length covers the entire length of the arena itself, so believe me, it is big. And this would be the canvas on which lot of tableaus will be painted.
Carrie Gracie: We are going to say that the wash painting developed in China during the Tang Dynasty. To begin, artist puts a few drops of water on ink stone, grinds the ink in circular motion, and then paints with a brush made of wolf hair or horse hair.
Huw Edwards: While the painting goes on, the stream of cultural icons of Chinese historical progress flows on the painting scroll itself. Very cleverly done.
Carrie Gracie: This is the Guchin, the ancient seven-stringed instrument we hear at the same time. We are going to see many of Chinese instruments during the course of this opening ceremony, and this is one of the most harmonious to Chinese ear. And the whole theme of this ceremony is harmony.
Huw Edwards: The Guchin, as Chinese say, has a history of three thousand years, and they claim it is the oldest pluck instrument in the world. I’m sure there will be other views on that, but this is the claim being made.
Carrie Gracie: These are ‘the three thousand disciples’ of Confucius, whether he really had three thousand, no matter, but certainly he does in this performance. What they chant is “All those within four seas can be considered as brothers” from The Analects, Confucius’s most famous work.
Huw Edwards: They are holding bamboo slips, a kind of books with scripts carved on the stringed bamboo slices. Again, the energy created by these men inside this stadium is remarkable.
The three thousand disciples of Confucius are celebrating learning, celebrating Chinese philosophy, and that learning of course takes the forms of books and paper, and of what we are going to see – the printed words.
Carrie Gracie: Confucius had the habit of speaking truth to the power when in and out of favor. – Here we have the example of the first movable type system, which was created here in China, out of ceramic blocks, around 1041 A.D. It was in 1450s for Europe to introduce what generally regarded as the independent invention of moveable type, and that was created by Germany’s Johannes Gutenberg.
We see here the evolution of one character, one special character which holds the clues to everything else this evening. This character is “he”, and it means harmony.
Moveable type began in the Sui Dynasty in the sixth century. Bi Sheng, in the Song Dynasty, improved the matter by making clay types and print. Every Chinese school child is told that the movable type is one of the greatest inventions of ancient Chinese civilization, along with the gun powder, the paper, and the compass. There is the modern character “he”, the one that you will see written in China today.
Huw Edwards: Peach blossoms, romantic and enjoyable, demonstrating the sweetness, peace and love in Chinese people.
2008北京奥运会开幕式美国NBC电视台
专题解说词
The footprints in their history stretch back 5000 years,
but for the world's greatest wall builders,
makers of a forbidden city,
what happens tonight is not merely a small step,
but a great leap.
China is welcoming the world.
Who will they be when this is over?
The clock of their lives has been beating with a screaming urgency.
They have pushed themselves to be as sharp as a razor's edge,
for this summer,
to be here,
now,
and nowhere else.
Beijing, the first ever Olympics for the world's most populous nation,
1.3 billion who framed the front-page story of the 21st century,
a China both outside time
and bursting every which way in a bewildering rush of transformation.
They have made themselves anew,
relentlessly,
devotedly,
so they might, on these days (if you want)
step into history.
They've submitted to an uncompromising search for mastery,
repetitive motion, technique polished toward an impossible(guys) ideal.
fall
fail
get up.
It's not the triumph,but the struggle.
It's not the triumph,but the struggle.
It's not the triumph, but the struggle.
Not the triumph,but the struggle.
Why did they begin?
Why do they endure?
It is time for the colorful clash of a universe of shimmering, still to be written biographies.
It is time to chase eternal youth.
Time to defy public heartbreak, laws of gravity.
Time for a Jamaican lightening bolt,
California brilliance.
It is time for the sweetly engaging gymnast from West des Moines,
and the poised daughter of a decorated Olympian.
It is time for the one who has endured the grinding burden of mind-blowing expectations.
Time for the headliner of the Athens games to play superman all over.
Are we about to see the fastest race ever?
A dynasty confirmed?
A victory cheered by a billion voices?
They have pushed themselves to be as sharp as a razor's edge,
for the scintillating prospect of enduring accomplishments,
to leave these games as the greatest Olympic champion of all time.
They have made themselves anew,
for this summer,
for Beijing,
for this
NOW !
设置如下：
输入OD成本矩阵所需要的输入元素是至少1个起始点与至少1个目的点。
当起始点和目的点都是1个时，就成了最短路径分析了，只不过看不到代表最短路径的那条折线了。
通常，我们可以通过批量导入起始点和目的地点，而不用手工去打。
分析设置
和最短路径分析类似，在输出Shape中只有“无”、“直线”两个选项。
多了两个新的设置参数：中断值和要查找的目的地。
中断值：当超过给定的中断值（搜索半径），就认为目的点不能到达，就不作为结果。例如，超过1000km的距离的城市，就不算了，比如北京和广州。
要查找的目的地：这个数值要小于等于目的点的个数，默认和目的点个数相等。如果给了一个值n，那么就会取该起始点的前n个最近目的点。
基本差不多。
薪资的多少主要与个人实力相关，自己创造价值的能力高，薪资自然就高。就比如按照北京平均水平，flutter和Java工资3年以内在10-20k，3到5年在15-30k，后续上不封顶。
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