To get the structure you have to parse it.
While working in development, I want this file to be pretty-printed so I can inspect the output better. I think for pretty-printing something, its very helpful to know its structure. However, by default, JSON. Im trying to write up a console.log under Tests in Postman to do two things. Many JavaScript frameworks use JSON.stringify () internally, like Express res.json () and Axios body serialization.
JSON.stringify () is the canonical way to convert a JavaScript object to JSON. const jsonData JSON.parse(responseBody) const payload ('.')1 const parsed JSON.parse(atob(payload)) const prettyString JSON.stringify(parsed,null,2) pm. by Valeri Karpov codebarbarian September 23, 2020. you can even put it in a batch file to run it by passing an argument. where dirty.json is minified or unreadable json and pretty.json is pretty one. By passing a number, that many spaces will be used to indent each level of properties.Ĭonsole.log(JSON.stringify(user, undefined, 2)) Ĭonsole.I am working on dynamically building an HTML output file in a NodeJS application. You can treat the whole JSON string as a template and wrap with a PRE tag. Super quick way to do it if you have python installed is by typing following in the command prompt or powershell: type dirty.json python -m json.tool > pretty.json.
#Postman console javascript pretty print json how to
There is a seldom-used 3rd parameter to stringify() that tells it to print the object with newlines and indentation. JavaScript JSON pretty print tutorial shows how to pretty print JSON data in JavaScript. Search for ' Debugging for packed apps ' setting. Type chrome://flags inside your Chrome URL window. Open Technologies Invest in the knowledge, specifications, standards, tooling, data, people, and organizations that define the next 50 years of the API economy. Reference for the people who just want to use Chrome’s Developer Tools (which will let you see console output and give you many more features) To enable it. We can leverage JSON.stringify() here to make our objects nicely formatted for logging. Learn about the latest cutting-edge features brewing in Postman Labs. What is serialization Serializing data is used to store and convert complex data types when writing and reading from memory. This does not answer this specific question, but hopefully will answer those searching for 'Print nested JSON Javascript'. If left blank, will output non-formatted JSON. The 2 says to pretty print the JSON with an indent of 2. The plain console.log() is much better, but with a large object this can be hard to read because all the properties are on one line. This prints deeply nested JSON to the console without the annoying 'Object'. if JSON.stringify () was directly called on this object, an empty string. if it is in an array, the index in the array, as a string. toString() on the object, which isn’t useful. JSON.stringify () calls toJSON with one parameter, the key, which has the same semantic as the key parameter of the replacer function: if this object is a property value, the property name. Often times though, that ends up being an object.įrequently this leads to something like this: It’s fairly frequent that we end up wanting to log what the contents of a JS variable is.
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