Hướng dẫn convert json to html

1. excel apps
2. conversion
3. json to html

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Shahpar Khan

JSON

JSONJavaScript 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

HTMLHypertext 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

1. Use an online convertor
2. Use JSON functions

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:

1. A JSON file
2. A URL
3. Raw JSON text

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:

var my_obj = {name: "Erik", age: 17, school: "Edpresso High"};

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;

CONTRIBUTOR

Shahpar Khan

Copyright ©2022 Educative, Inc. All rights reserved

So I've got this HTML form:

    

        
First Name:
        

        
Last Name:
        

        
    

Which would be the easiest way to send this form's data as a JSON object to my server when a user clicks on submit?

UPDATE: I've gone as far as this but it doesn't seem to work:

answered Aug 4, 2020 at 21:15

Hasan A YousefHasan A Yousef

20.3k22 gold badges118 silver badges177 bronze badges

I'm late but I need to say for those who need an object, using only html, there's a way. In some server side frameworks like PHP you can write the follow code:

        
First Name:
        

        
Last Name:
        

        
    

So, we need setup the name of the input as object[property] for got an object. In the above example, we got a data with the follow JSON:

{
"name": {
  "first": "some data",
  "last": "some data"
 }
}

answered Mar 3, 2020 at 2:31

orafaelreisorafaelreis

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2

you code is fine but never executed, cause of submit button [type="submit"] just replace it by type=button

inside your script; form is not declared.

let form = document.forms[0];
xhr.open(form.method, form.action, true);

answered Apr 5, 2019 at 2:57

tdjprogtdjprog

6886 silver badges11 bronze badges

1

Use FormData API

1. Capture the form data using FormData API formData= new FormData(form)
2. Convert it into JSON using JSON.stringify(Object.fromEntries(formData))
3. Send this strigified json as ajax payload

var form = document.getElementById('myForm');
form.onsubmit = function(event){
        var xhr = new XMLHttpRequest();
        var formData = new FormData(form);
        //open the request
        xhr.open('POST','http://localhost:7000/tests/v1.0/form')
        xhr.setRequestHeader("Content-Type", "application/json");

        //send the form data
        xhr.send(JSON.stringify(Object.fromEntries(formData)));

        xhr.onreadystatechange = function() {
            if (xhr.readyState == XMLHttpRequest.DONE) {
                form.reset(); //reset form after AJAX success or do something else
            }
        }
        //Fail the onsubmit to avoid page refresh.
        return false; 
    }

Taken from an article I wrote here: https://metamug.com/article/html5/ajax-form-submit.html

Samuel Liew♦

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answered Sep 29, 2021 at 10:15

SorterSorter

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If you want to use pure javascript in 2022...

const ajax = async (config) => {
    const request = await fetch(config.url, {
        method: config.method,
        headers: {
            'Accept': 'application/json',
            'Content-Type': 'application/json'
        },
        body: JSON.stringify(config.payload)
    });
    response = await request.json();
    console.log('response', response)
    return response
}

// usage
response = ajax({
    method: 'POST',
    url: 'example.com',
    payload: {"name": "Stackoverflow"}
})

answered Aug 30 at 10:04

The micro-library field-assist does exactly that: collectValues(formElement) will return a normalized json from the input fields (that means, also, checkboxes as booleans, selects as strings,etc).

answered Dec 8, 2020 at 16:30

Avi TshuvaAvi Tshuva

2482 silver badges12 bronze badges

I found a way to pass a JSON message using only a HTML form.

This example is for GraphQL but it will work for any endpoint that is expecting a JSON message.

GrapqhQL by default expects a parameter called operations where you can add your query or mutation in JSON format. In this specific case I am invoking this query which is requesting to get allUsers and return the userId of each user.

{ 
 allUsers 
  { 
  userId 
  }
}

I am using a text input to demonstrate how to use it, but you can change it for a hidden input to hide the query from the user.

In order to make this dynamic you will need JS to transport the values of the text fields to the query string before submitting your form. Anyway I found this approach very interesting. Hope it helps.

answered Nov 20, 2020 at 0:02

IsraelmIsraelm

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1

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