Minimal JSON Data Formatter – JSONViewer

A super lightweight, pure JavaScript JSON formatter / viewer which helps render JSON objects just like a collapsible tree view.

How to use it:

Load the following JS and CSS files into your html page.

<script src="json-viewer.js"></script>
<link rel="stylesheet" href="json-viewer.css">

Create an element to place the formatted JSON objects.

<div id="json"></div>

Create a new JSONViewer instance.

var jsonViewer = new JSONViewer();

Append the instance to the DIV element you just created.

document.querySelector("#json").appendChild(jsonViewer.getContainer());

Format and beautify your JSON data using the showJSON() method. Available parameters:

• json: json Input value
• maxLvl: Process only to max level, where 0..n, -1 unlimited
• colAt: Collapse at level, where 0..n, -1 unlimited

jsonViewer.showJSON(json, maxLvl, colAt);

Changelog:

04/16/2020

• update to es6+

02/29/2020

• CSS update

03/19/2019

• fixed xss vulnerability

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