How to pretty print JSON.stringify output

-

JSON.stringify is a method of JSON global which converts valid JSON to a serialized string

JSON is an abbreviation of 'JavaScript Object Notation' it's an independent data type that is not specific to JavaScript programming language.

JSON is a global object with methods for manipulating JSON data

JSON.stringify is a method that converts JSON to a string its may be used for debug or simply to serialize JSON

It accepts three arguments (JSON, FUNCTION, SPACER)

JSON: maybe an array or object

FUNCTION: Is an influencer it's a middle man that alters what is to be returned

SPACER; Is a character used to indent or prettyfiy output

For instance take a look;

const name = 'John'
const surname = 'swana'
const me = {name, surname}

JSON.stringify(me, null, '    ')

Returns the following output;

{
    'name': 'John',
    'surname': 'swana'
}

Comments

Post a Comment

Popular posts from this blog

What is 'this.' keyword in JavaScript

-
In JavaScript 'this' is an object and a reference to the current object that is used to get and to set properties of the current object. Take for instance within a function; const func = function (name){     this.name = name } func.name instance property name is set to that of the first argument; const inst = new func('duke') inst.name // returns duke You can as well extend func to set name using 'this'; func.prototype.set = function(name){     this.name = name } Running the previous instance with this set method; inst.set('John') // returns John
Read more

How to iterate array elements using 'for loop' in JavaScript

-
JavaScript arrays are similar to arrays in c and in c like programming languages such as php among others In JavaScript arrays are simply collections of elements for instance Objects Numbers or other Arrays Declaring an array An array may be declared using the array constructor for instance const array = new Array() or as const array = [] Iterating an array using 'for' loop This is the implest and most common method to iterate an array is by using the 'for loop' am sure you're familiar with the syntax. take for Instance you want to iterate an array of integers and print each one of them. var ints = [1, 2, 3, 4] To iterate ints using for loop. for (var i = 0; i < ints.length; i++){         console.log(ints[i]) } // output will be // 1 // 2 // 3 // 4 In between the parentheses they are three procedures in three segments separated by colons first segment declares var i an index which gets incriminated in the third segment as long as it's less
Read more