I was wondering if it's possible to open a local JSON file so I can just check its structure? Didn't/don't want to upload the file to an online JSON format checker site and was hoping I can just utilize PAW to do that.
Don't seem to be able to do this with a local file, unless I run it through a local server, eg using MAMP, unless I missed something...?
Thanks.
You could copy the content into the txt body then switch to the JSON body this will let you view it in the nice structure, sorry currently no way to directly import a file need to copy past the content.
Take a look at jsonlint npm module. Supports JSON schema validation and pretty printing.
Related
I came across two ways to import local json files to my code.
Using angulars http get.
Thats well known for loading json input. You can switch easily from remote to local json files.
Typescript require
Another way to load json in typescript files is via require. This is simple as I don't have to deal with Promises/Observables. I just include them like this:
data: any = require('assets/json/my.json');
I want to know something about the advantages and disadvantages between these two approaches. Is there a prefered way and why?
Hi it depends on your requirement.
If your file is constant, will not be changed then it is best option is to use .require()
- .require() will cache your file, and when you import again it will give the cached file, so it might be bad option you want current time data because you will not get the updated data from that file
But if your file is getting updated then you have to use HTTP.
I am able to find some information on how to read a csv file on a computer but is there any way I can modify one? In my chrome extension I need to add data to each row one at a time after scraping some websites. Is there any better way then read csv, store data as variable and rewrite is everytime? This becomes problematic when the file gets large. I am looking for a way to “append ” to a existing file or a work around. Any suggestions appreciated.
Update: From comment I see it is not possible to read from file system. But is there anyway to read from within the extension directory? How should I do so if the csv file is included with in the zip file of the extension? Can I access them somehow? Code snippets would be helpful.
I'm in the middle of creating something which might help you. Right now you can upload the CSV file and append a "modifier". You can adjust the code according to your requirement. Here's the repo https://github.com/amanrOnly/CSV_Modifier
I'm new to Scala and Scala.js and I want to experiment with handling JSON data. I'd like to simulate a server response by returning the content of a JSON file local to my Scala.js project, parse it and work with the data. What would be the best way to do so? Where should I place these files in my project tree, and how would I get their content?
Say that I have a file called myJSON.json containing something like
[
{
"ress": "AR",
"lastDate": "2017-10-27 09:19:18"
},
{
"ress": "JIM",
"lastDate": "2017-10-27 06:57:15"
},
{
"ress": "JOE",
"lastDate": "2017-09-29 11:57:39"
}
]
Can I place this file somewhere in my project so that I can read this file and then parse its content to use it somehow (could be displayed in the browser, logged to the console, etc...)? I guess I could use a tool such as scala-js or something similar for parsing, but accessing the file content in the first place is what I try to figure out.
Note that I'm using scala-js.
Thanks in advance!
Like others said above, Javascript that runs in the browser in general can't access the local filesystem. There are some exceptions:
The File API lets you access files that the user has selected in the UI using <input type="file" /> or drag-and-dropped into the browser window.
The Filesystem API lets you access files the way you seem to want, but it is non-standard and is not supported in most browsers. It also seems that Scala.js has no typings for it, but I'm not sure.
scala-js-dom has typings for the File API that you can use – search for File and FileList types in its source. Its API mirrors the Javascript API, so you will need to look for how exactly to do this in JS. Then translating it into Scala.js will be easy (or at least a different question).
If the File API does not work for your use case, another option is to use something like json-server to easily serve your JSON files on localhost via HTTP.
i want to handle a requirement in polymer webcomponents where user can upload csv file from ui and csv file can be parsed to json and sent to server ,i searched and found for vaadin upload,looked over the api but i am not sure how to receive the csv file and convert to json and sent to server,can anyone show a jsfiddle of vaadin upload or any other web component to handle this scenario?
First of all, I am wondering why you would not simply do the conversion on the server side.
In this case, you would be able to use the vaadin-upload directly indeed.
Here is a snippet that would upload all files to the example.com server, and only allow CSV files.
<vaadin-upload target="https://example.com/upload" method="POST" accept="text/csv">
</vaadin-upload>
There are plenty of resources on how to convert CSV files to JSON.
Here is a snippet
And here is a node library
If you really wanted to do the conversion client side, then I would suggest to create an element that would embed a vaadin-upload, and convert the Files array to Json before manually calling the uploadFiles method.
Busy building a website for a client using classic ASP (It will reside on an old server) which is going to be used internally only.
The admin is able to view a paginated table of data and export this to CSV. This works fine when I save the CSV data to a CSV file but I have now been asked to try avoid the creation of the file if possibly and create the CSV in memory without the need for a file.
I have my doubts that this is possible but might be completely wrong. Is there anyway to send the CSV data to the browser such that it will open in Excel rather than having to create a CSV file and link to it as I am currently doing ?
TIA
John
Response.ContentType = "text/csv" will help you here. In the past I've paired that with a rewrite rule so that the URL is something like foo.com/example.csv but there are plenty of other ideas to be found in the following question: Response Content type as CSV