Shahab w2-espress class notes#12
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MadEste
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Jul 13, 2019
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| ## Express.js is a node.js framework which makes it easy to work with server side applications and takes care of lots of repetitive things for us. | ||
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| ## morgan provides logging |
MadEste
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Jul 13, 2019
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| ## Query parameters are used to make our request more specific. In this case we send them as a key:value pairs. |
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Query parameters are often used for filters etc.
MadEste
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Jul 13, 2019
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| ## app.use() is a general function for every request to go through |
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Remember each request moves down the list until it finds an endpoint and will only continue if next is called inside a function.
MadEste
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Jul 13, 2019
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| * **Question:** What type of thing is `app.get()` and what is its purpose? | ||
| ## The type of 'app' is Object which has multiple function attached to it. node.js starts the Express.js and app is being used to start up our server |
MadEste
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Jul 13, 2019
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| * **Question:** What type of thing is `res` and what does it represent in the callback? | ||
| ## This is the pass represented by '/'. |
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Path represented, in this case the home.
MadEste
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Jul 13, 2019
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| ## Just need change the 'app.get' to 'app.post' | ||
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MadEste
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Jul 13, 2019
| - **Question:** Right now all of our requests will return a "Status Code" of 200. Define what a status code is and research how you could change it. | ||
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What do Status codes do and why are they important?
MadEste
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Jul 13, 2019
| - **Question:** Look for `helpers.validate` in the `app.js` file. What is this and how does it work? | ||
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Gives some middleware functionality. Look how helpers is being used on line 33
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