Parsing json data to html

JSON .parse()

A common use of JSON is to exchange data to/from a web server.

When receiving data from a web server, the data is always a string.

Parse the data with JSON.parse() , and the data becomes a JavaScript object.

Example — Parsing JSON

Imagine we received this text from a web server:

Use the JavaScript function JSON.parse() to convert text into a JavaScript object:

Make sure the text is in JSON format, or else you will get a syntax error.

Use the JavaScript object in your page:

Example

Array as JSON

When using the JSON.parse() on a JSON derived from an array, the method will return a JavaScript array, instead of a JavaScript object.

Example

Exceptions

Parsing Dates

Date objects are not allowed in JSON.

If you need to include a date, write it as a string.

You can convert it back into a date object later:

Example

Convert a string into a date:

document.getElementById(«demo»).innerHTML = obj.name + «, » + obj.birth;

Or, you can use the second parameter, of the JSON.parse() function, called reviver.

The reviver parameter is a function that checks each property, before returning the value.

Example

Convert a string into a date, using the reviver function:

document.getElementById(«demo»).innerHTML = obj.name + «, » + obj.birth;

Parsing Functions

Functions are not allowed in JSON.

If you need to include a function, write it as a string.

You can convert it back into a function later:

Example

Convert a string into a function:

document.getElementById(«demo»).innerHTML = obj.name + «, » + obj.age();

You should avoid using functions in JSON, the functions will lose their scope, and you would have to use eval() to convert them back into functions.

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How to convert JSON to HTML

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JSON

JSON JavaScript Object Notation is a lightweight, text-based data-interchange format. JSON is based on two basic data structures ( key-value pairs and ordered lists ) and is language-independent. In JSON, data can only be in text form while it is exchanged between a browser and a server. Any JavaScript object can be converted into JSON text.

HTML

HTML Hypertext Markup Language is a language used to design and display web pages. HTML is a formatting language that focuses mainly on its tags and attributes to markup webpages. HTML cannot be referred to as a programming language as it does not contain any conditional statements or dynamic structure.

Methods to convert JSON to HTML

How to use an online convertor

Using an online converter to convert JSON to HTML is a bit tedious and it might not be resorted to dynamic conversion over a website. However, this tool will come in handy if you want to parse one JSON file for reasons not concerning a particular website. Here is a link to an online converter called ConvertJSON. It looks something like this:

ConvertJSON is pretty straightforward. There are three ways you can give your input:

After giving input, you will receive an HTML text that will convert your JSON into an HTML table. You can copy that and use it!

How to use JSON functions

JSON functions are a more useable method and can be easily incorporated into a web application. The key function that enables us to convert JSON to HTML at runtime is JSON.parse() . The JSON.parse() method takes textual JSON data and converts it to a JavaScript object. You can then easily use this object to display data in HTML. Let’s look at an example:

Here we have an object with three attributes:

In the code above, we first created an object and then converted it to JSON using JSON.stringify() . This is a good way to mimic the conversion because the data is received in textual form over the network:

var my_json = JSON.stringify(my_obj); 

We then pass this text to the JSON.parse() function and it converts it into a JavaScript object:

var my_json = JSON.stringify(my_obj); var parsed_obj = JSON.parse(my_json); 

Finally, we use the object to render the HTML tag:

json_to_html_tag.innerHTML = "Converting JSON to HTML 

" + "Name: " + parsed_obj.name + "
Age: " + parsed_obj.age + "
School: " + parsed_obj.school; 

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Transform Json representation of html element into html string

mthdht/json-to-html-parser

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README.md

A Simple way to convert JSON representation of HTML to real HTML
· Report Bug · Request Feature

This package is a simple class that allows you to convert Html elements as Json format into a html string

A element is represented by 4 attributes: tag — attributes — content — children (see Usage)

npm install @mthdht/json-to-html-parser

First you have to import the newly installed package, then use it in your code

import JsonConverter from '@mthdht/json-to-html-parser' // as ES6 module or, let JsonConverter = require('@mthdht/json-to-html-parser') // as node js module // Your code . let result = JsonConverter.convertToElement(SomeJsonRepresentationOfElements)

The Json data that you pass into the convertToElement method must some rules:

1. It must have a root element
2. There are 4 main attributes to represent a html element (see Examples):
   1. tag : The name of the element (required except if only have content attribute)
   2. attributes : An object of the element attributes. eg: < 'class': 'some class', . >(optional)
   3. content : The texte content of the element (optional but cannot be used with children attribute)
   4. children : An array of children elements (optional)

    'tag': 'p', 'attributes':  'class': 'classe1 classe2 . ', 'title': 'Some title', . >, 'content': 'My p content' >

   Using JsonConverter.convertToElement on this json representation will return a string that looks like this:

   p class pl-s">classe1 classe2 . " title pl-s">Some title" . >My p contentp>

   You can build nested elements by using the children attribute. It must be an array with all nested elements you want

    'tag': 'div', 'attributes': . >, 'children': [  'tag': 'element1' ... >,  'tag': 'element2, . > ] >

   Will return some string like this:

   div atribute1 pl-s">value1" . > element1 . >. element1> element2 . >. element2> div>

   Sometimes you may wish having an element with text content surrounded by other elements like span , strong etc.

   In this case, you can use an object with only the content attribute in the children attribute like this:

    'tag': 'element', 'attributes': . >, // if needed 'children': [  'content': 'The text content' >,  'tag': 'span, 'content': 'Some Span Content' > ] >

   element . > The text contentspan>SomeSpan Contentspan> element>

   Contributions are what make the open source community such an amazing place to be learn, inspire, and create. Any contributions you make are greatly appreciated.

   1. Fork the Project
   2. Create your Feature Branch ( git checkout -b feature/AmazingFeature )
   3. Commit your Changes ( git commit -m ‘Add some AmazingFeature )
   4. Push to the Branch ( git push origin feature/AmazingFeature )
   5. Open a Pull Request

   Distributed under the MIT License.

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   Transform Json representation of html element into html string

   mthdht/json-to-html-parser

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   README.md

   A Simple way to convert JSON representation of HTML to real HTML
   · Report Bug · Request Feature

   

   This package is a simple class that allows you to convert Html elements as Json format into a html string

   A element is represented by 4 attributes: tag — attributes — content — children (see Usage)

   npm install @mthdht/json-to-html-parser

   First you have to import the newly installed package, then use it in your code

   import JsonConverter from '@mthdht/json-to-html-parser' // as ES6 module or, let JsonConverter = require('@mthdht/json-to-html-parser') // as node js module // Your code . let result = JsonConverter.convertToElement(SomeJsonRepresentationOfElements)

   The Json data that you pass into the convertToElement method must some rules:

   1. It must have a root element
   2. There are 4 main attributes to represent a html element (see Examples):
      1. tag : The name of the element (required except if only have content attribute)
      2. attributes : An object of the element attributes. eg: < 'class': 'some class', . >(optional)
      3. content : The texte content of the element (optional but cannot be used with children attribute)
      4. children : An array of children elements (optional)

       'tag': 'p', 'attributes':  'class': 'classe1 classe2 . ', 'title': 'Some title', . >, 'content': 'My p content' >

      Using JsonConverter.convertToElement on this json representation will return a string that looks like this:

      p class pl-s">classe1 classe2 . " title pl-s">Some title" . >My p contentp>

      You can build nested elements by using the children attribute. It must be an array with all nested elements you want

       'tag': 'div', 'attributes': . >, 'children': [  'tag': 'element1' ... >,  'tag': 'element2, . > ] >

      Will return some string like this:

      div atribute1 pl-s">value1" . > element1 . >. element1> element2 . >. element2> div>

      Sometimes you may wish having an element with text content surrounded by other elements like span , strong etc.

      In this case, you can use an object with only the content attribute in the children attribute like this:

       'tag': 'element', 'attributes': . >, // if needed 'children': [  'content': 'The text content' >,  'tag': 'span, 'content': 'Some Span Content' > ] >

      element . > The text contentspan>SomeSpan Contentspan> element>

      Contributions are what make the open source community such an amazing place to be learn, inspire, and create. Any contributions you make are greatly appreciated.

      1. Fork the Project
      2. Create your Feature Branch ( git checkout -b feature/AmazingFeature )
      3. Commit your Changes ( git commit -m ‘Add some AmazingFeature )
      4. Push to the Branch ( git push origin feature/AmazingFeature )
      5. Open a Pull Request

      Distributed under the MIT License.

      Источник