Send array in json javascript

Как в js преобразовать массив в json

Чтобы преобразовать массив в строку JSON , можно воспользоваться методом JSON.stringify() :

В дополнение к ответу выше хочется упомянуть о дополнительных возможностях метода JSON.stringify():
Перейдем сразу к примеру:

//Дан массив объектов с вложенной структурой const users = [  name: 'Karina', password: 'qwerty', info:  age: 25, children: true, >, >,  name: 'Mark', login: 'alice', info:  age: 27, children: false, >, >, ]; console.log(JSON.stringify(users)); //Если воспользоваться стандартным способом, то вывод в консоли будет следующий: // => [>, //>] 

Согласитесь, что этот способ не очень читаемый.
Если мы передадим третьим параметром число или символ, то он сможет использоваться
для управления интервалом в конечной строке.

console.log(JSON.stringify(users, null, 2)); // => //[ // // "name": "Karina", // "password": "qwerty", // "info": // "age": 25, // "children": true // > // >, // // "name": "Mark", // "login": "alice", // "info": // "age": 27, // "children": false // > // > //] 

Теперь вывод в консоли стал более читаем. Также третьим параметром можно передать и символы.
Посмотрим, как это будет выглядеть:

console.log(JSON.stringify(users, null, '-/-')); // => //[ //-/- //-/--/-"name": "Karina", //-/--/-"password": "qwerty", //-/--/-"info": //-/--/--/-"age": 25, //-/--/--/-"children": true //-/--/-> //-/->, //-/- //-/--/-"name": "Mark", //-/--/-"login": "alice", //-/--/-"info": //-/--/--/-"age": 27, //-/--/--/-"children": false //-/--/-> //-/-> //] 

Возможно, эти способы окажутся для вас полезными.

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How To Convert An Array To Json Using Javascript

While working on web development, there are many times we have to convert an array to json using Javascript. If you still do not know how to convert it, don’t worry! In this tutorial, we’ll show you how to do that in just a few steps.

What is JSON?

JavaScript Object Notation (JSON) is an extremely fast data transfer format between the servers and the clients/web pages. It is a string that has the same format as JavaScript Object literal format. You can read more about JSON here.

Our data has to be a string if we want to send it to the web server. That is why in some situations when we want to send our array, we have to convert it into a JSON string/JSON object.

How to convert an array to JSON using JavaScript

Method 1: Using JSON.stringify()

This is the simplest method to convert an array into a JSON string.

Return value: The JSON string representing the value.

We will have the array myArr containing a list of numbers. Now we will apply the JSON.stringify() method to convert it into a string and stored in str. We will also use typeof to check the type of our converted string.

var myArr = [78, 353, 35, 49, 83, 100, 45]; var str = JSON.stringify(myArr); console.log(str); console.log(typeof str);

Method 2: Using JSON.parse()

After converting your array into a JSON string, you can also do one more step to make it a JSON object. The idea is to use the JSON.parse() method.

• text: The string to parse
• reviver (optional): A function that modifies the result before returning.

Return value: Object, array, string, number, boolean, or null value based on the given JSON text.

Completed code for the example:

var myArr = [78, 353, 35, 49, 83, 100, 45]; var str = JSON.stringify(myArr); var obj = JSON.parse(str); console.log(obj); console.log(typeof obj);

In our object, the index of our array’s elements are the names and the values of the elements are the values of the names.

Summary

In this tutorial, we have shown you how to convert an array to JSON using JavaScript (JSON string and JSON object). This is one of the most important skills that we should know while working on web development. The ideas are very straightforward: use JSON.stringify() to convert your array into a JSON string and JSON.parse() to convert your JSON string into a JSON object.

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Convert Array to JSON Object JavaScript

Convert array to JSON object javascript; In this tutorial, you will learn how to convert array to JSON object in JavaScript.

JSON means JavaScript Object Notation. JSON is an extremely lightweight data-interchange format for data exchange between server-side and client side which is quick and easy to parse and generate.

Convert Array to JSON Object JavaScript

• 1. Convert Array to JSON Object JavaScript
• 2. Converting an Object to an Array
• 3. Convert two dimensional ( 2d ) arrays to JSON Object JavaScript

1. Convert Array to JSON Object JavaScript

You can use JSON.stringify to convert an array into a JSON formatted string in JavaScript.

Suppose there is an array such as “[1, 2, 3, 4]”. If you want to convert this array to JSON Object in javascript. Let’s see the example below

Ex:-

var array = [1, 2, 3, 4]; var arrayToString = JSON.stringify(Object.assign(<>, array)); // convert array to string var stringToJsonObject = JSON.parse(arrayToString); // convert string to json object console.log(stringToJsonObject);

• 1.JSON.stringify() and Object.assign() method convert array to JSON string.
• 2.JSON.parse() method convert string to JSON object in javascript.

2. Converting an Object to an Array

When converting an object to an array, we’ll use the .entries() method from the Object class. This will convert our object to an array of arrays. Each nested array is a two-value list where the first item is the key and the second item is the value.

Ex:-

var object = < "first_name": "Test", "last_name": "Test", "email": "[email protected]" > var arr = Object.entries(object); console.log(arr);

3. Convert two dimensional ( 2d ) arrays to JSON Object JavaScript

Suppose there is an array such as

var arr = [ ["Status", "Name", "Marks", "Position"], ["active", "Akash", 10.0, "Web Developer"], ["active", "Vikash", 10.0, "Front-end-dev"], ["deactive", "Manish", 10.0, "designer"], ["active", "Kapil", 10.0, "JavaScript developer"], ["active", "Manoj", 10.0, "Angular developer"], ];

If you want to convert this array to JSON Object in javascript. Let’s see the example below :

Ex:-

//array. var arr = [ ["Status", "Name", "Marks", "Position"], ["active", "Akash", 10.0, "Web Developer"], ["active", "Vikash", 10.0, "Front-end-dev"], ["deactive", "Manish", 10.0, "designer"], ["active", "Kapil", 10.0, "JavaScript developer"], ["active", "Manoj", 10.0, "Angular developer"], ]; //javascript create JSON object from two dimensional Array function arrayToJSONObject (arr)< //header var keys = arr[0]; //vacate keys from main array var newArr = arr.slice(1, arr.length); var formatted = [], data = newArr, cols = keys, l = cols.length; for (var i=0; i; for (var j=0; j return formatted; >

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