How we can format or beautify JSON codes using JavaScript? Solution: See this JSON Formatter & Beautifier with Tree View, Beautify JSON Codes Online.
Previously I have shared an HTML CSS Minifier and Beautifier program, but this program is for beautifying JSON structure data. Basically, code minify and beautify is the process of compress and decompress codes. When we put codes online on server, then we have to minify that code of fast webpage loading. But later when we want to read that code then it difficult to understand because of minifying or compressing. Then we have to do use code formatter or beautifier programs to decompressing the code.
Today you will learn to create a Beautify JSON Codes Online program. Basically, there are 2 boxes for minified and beautified versions and 4 buttons for load, collapse, expand, and reset functions. There is a code block I have placed in files, by default you will see compressed codes on the minified codes section. You can experiment with the program with the help of those codes, you can beautify or format the codes by pressing the load button. When you will click on collapse then the codes will manage with a tree view, and on expand button click all codes will show again. You can reset the minified or compressed codes section by pressing the reset button, also you can just replace the codes by select and delete.
So, Today I am sharing JSON Formatter & Beautifier with Tree View. There I have used JavaScript to create the program, and the layout & styles are based on HTML CSS. This is a complete program to beautify JSON codes. You can use this program to build your online JSON formatter and beautifier. Also, you can customize the program like add save or download codes feature according to your requirement.
If you are thinking now how this JSON formatter program actually is, then see the preview given below.
Preview Of Beautify JSON Codes Online
See this video preview to getting an idea of how this code uncompress/decompress program looks like.
Live Demo
Now you can see this program visually, also you can see it live by pressing the button given above. If you like this, then get the source code of its.
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JSON Formatter & Beautifier with Tree View Source Code
Before sharing source code, let’s talk about it. First I have created a div named container for placing minified codes using the form, label, and textarea tags. Then I have created another div with 4 buttons tags to placing the function buttons. After that, I have created another div for output for beautified codes.
Now using CSS I have placed all the elements in the right place, as you can see in the preview. With CSS first I gave basic values like size, position, margin, padding, etc to all the elements. There I have used width: and max-width: both tags to create a responsive design. There I have also styled those elements which dynamically created by JavaScript.
JavaScript handling the here whole functions in this program. There I have dynamically created an HTML list for beautifying codes layout and tree view feature. I have used JS if{} else{} statements to creating the functions, and I have placed a value to textarea for by default visualize codes sample. For fetching the buttons I have used document.querySelector command and used .addEventListener command for detecting the actions.
Left all other things you will understand after getting the codes, I can’t explain all in writing. For creating this program you have to create 3 files. First file for HTML, second for CSS, and the third file for JavaScript. Follow the steps to creating this program without any error.
index.html
Create an HTML file named ‘index.html‘ and put these codes given below.
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<!DOCTYPE html> <!-- Code By Webdevtrick ( https://webdevtrick.com ) --> <html lang="en" > <head> <meta charset="UTF-8"> <title>JSON Formatter Beautifier | Webdevtrick.com</title> <link rel="stylesheet" href="style.css"> </head> <body> <div class="container"> <div id="wrap"> <form class="form"> <label class="form__label--hidden" for="msg">Input json:</label> <textarea class="form__input" class="form__input" id="msg" placeholder="Input json..." rows="6"></textarea> </form> </div> <div id="two"> <button type="button" class="load-json">Load</button> <button type="button" class="collapse">Collapse</button> <button type="button" class="expand">Expand</button> <button type="button" class="reset">Reset</button> </div> <div id="tree"> <div id="json"></div> </div> </div> <script src="function.js"></script> </body> </html> |
style.css
Now create a CSS file named ‘style.css‘ and put these codes given here.
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/* Code By Webdevtrick ( https://webdevtrick.com ) */ input, textarea { display: block; outline: 0; border: 0; } input:focus, textarea:focus { transition: 0.2s; } body { background-color: #fff; font-family: 'Open Sans', Helvetica, sans-serif; } .container { width: 100%; margin: 30px auto; } #wrap { width: 350px; max-width: 90%; float: left; margin-left: 2%; margin-right: 2%; } #two { width: 100px; float: left; margin-right: 2%; margin-left: 2%; padding-top: 15%; } #tree { width: 680px; max-width: 98%; float: left; margin-left: 1%; margin-top: -12px; } .form__label { display: block; margin-bottom: 0.625em; } .form__label--hidden { border: 0; clip: rect(0 0 0 0); height: 1px; margin: -1px; overflow: hidden; padding: 0; position: absolute; width: 1px; } .form__input { width: 100%; height: 560px; font-size: 1em; padding: 0.83333em; margin-bottom: 5px; border: 6px solid #ff5f5f; border-radius: 0.4em; background: #ebecec; color: #656D78; font-weight: 300; } .form__modal { width: 83%; font-size: 1em; padding: 0.83333em; margin-bottom: 5px; border-bottom: 6px solid #ff5f5f; border-radius: 0.4em; background: #ebecec; color: #656D78; font-weight: 300; } .load-json, .reset, .collapse, .expand, [type^="button"] { padding: 0.9375em 1.875em; border: 0; border-radius: 0.4em; color: #fff; text-transform: uppercase; font-size: 0.875em; font-weight: 400; transition: opacity 0.2s; display: block; width: 100%; } .load-json:hover, .reset:hover, .collapse:hover, .expand:hover, [type^="button"]:hover { opacity: 0.75; cursor: pointer; } .load-json { background-color: #3BAFDA; } .reset { background-color: #e60023; } .collapse { background-color: #5cb85c; } .expand { background-color: #fd9d08; } [type^="button"] { margin-bottom: 1.42857em; width: 120px; margin-right: 0.625em; outline:none; } .json-viewer { display: inline-block; overflow: scroll; height: 563px; width: 710px; max-width: 90%; color: #656D78; padding: 10px 10px 10px 20px; background-color: #ebecec; border: 6px solid #ff5f5f; border-radius: 0.4em; margin-bottom: 3px; } .json-viewer ul { list-style-type: none; margin: 0; margin: 0 0 0 1px; border-left: 3px dotted #ccc; padding-left: 2em; } .json-viewer .hide { display: none; } .json-viewer ul li .type-string, .json-viewer ul li .type-date { color: #ff5f5f; } .json-viewer ul li .type-boolean { color: #F6BB42; font-weight: bold; } .json-viewer ul li .type-number { color: #e87376; } .json-viewer ul li .type-null { color: #EC87C0; } .json-viewer a.list-link { color: #656D78; text-decoration: none; position: relative; } .json-viewer a.list-link:before { color: #aaa; content: "\25BC"; position: absolute; display: inline-block; width: 1em; left: -1em; } .json-viewer a.list-link.collapsed:before { content: "\25B6"; } .json-viewer a.list-link.empty:before { content: ""; } .json-viewer .items-ph { color: #aaa; padding: 0 1em; } .json-viewer .items-ph:hover { text-decoration: underline; } |
function.js
The last step, create a JavaScript file named ‘function.js‘ and put the codes.
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// Code By Webdevtrick ( https://webdevtrick.com ) JSONViewer = (function() { var JSONViewer = function() { this._dom = {}; this._dom.container = document.createElement("pre"); this._dom.container.classList.add("json-viewer"); }; JSONViewer.prototype.showJSON = function(json, maxLvl, colAt) { maxLvl = typeof maxLvl === "number" ? maxLvl : -1; // max level colAt = typeof colAt === "number" ? colAt : -1; // collapse at var jsonData = this._processInput(json); var walkEl = this._walk(jsonData, maxLvl, colAt, 0); this._dom.container.innerHTML = ""; this._dom.container.appendChild(walkEl); }; /** * Get container with pre object - this container is used for visualise JSON data. * * @return {Element} */ JSONViewer.prototype.getContainer = function() { return this._dom.container; }; /** * Process input JSON - throws exception for unrecognized input. * * @param {Object|Array} json Input value * @return {Object|Array} */ JSONViewer.prototype._processInput = function(json) { if (json && typeof json === "object") { return json; } else { throw "Input value is not object or array!"; } }; /** * Recursive walk for input value. * * @param {Object|Array} value Input value * @param {Number} maxLvl Process only to max level, where 0..n, -1 unlimited * @param {Number} colAt Collapse at level, where 0..n, -1 unlimited * @param {Number} lvl Current level */ JSONViewer.prototype._walk = function(value, maxLvl, colAt, lvl) { var frag = document.createDocumentFragment(); var isMaxLvl = maxLvl >= 0 && lvl >= maxLvl; var isCollapse = colAt >= 0 && lvl >= colAt; switch (typeof value) { case "object": if (value) { var isArray = Array.isArray(value); var items = isArray ? value : Object.keys(value); if (lvl === 0) { // root level var rootCount = this._createItemsCount(items.length); // hide/show var rootLink = this._createLink(isArray ? "[" : "{"); if (items.length) { rootLink.addEventListener("click", function() { if (isMaxLvl) return; rootLink.classList.toggle("collapsed"); rootCount.classList.toggle("hide"); // main list this._dom.container.querySelector("ul").classList.toggle("hide"); }.bind(this)); if (isCollapse) { rootLink.classList.add("collapsed"); rootCount.classList.remove("hide"); } } else { rootLink.classList.add("empty"); } rootLink.appendChild(rootCount); frag.appendChild(rootLink); } if (items.length && !isMaxLvl) { var len = items.length - 1; var ulList = document.createElement("ul"); ulList.setAttribute("data-level", lvl); ulList.classList.add("type-" + (isArray ? "array" : "object")); items.forEach(function(key, ind) { var item = isArray ? key : value[key]; var li = document.createElement("li"); if (typeof item === "object") { var isEmpty = false; // null && date if (!item || item instanceof Date) { li.appendChild(document.createTextNode(isArray ? "" : key + ": ")); li.appendChild(this._createSimple(item ? item : null)); } // array & object else { var itemIsArray = Array.isArray(item); var itemLen = itemIsArray ? item.length : Object.keys(item).length; // empty if (!itemLen) { li.appendChild(document.createTextNode(key + ": " + (itemIsArray ? "[]" : "{}"))); } else { // 1+ items var itemTitle = (typeof key === "string" ? key + ": " : "") + (itemIsArray ? "[" : "{"); var itemLink = this._createLink(itemTitle); var itemsCount = this._createItemsCount(itemLen); // maxLvl - only text, no link if (maxLvl >= 0 && lvl + 1 >= maxLvl) { li.appendChild(document.createTextNode(itemTitle)); } else { itemLink.appendChild(itemsCount); li.appendChild(itemLink); } li.appendChild(this._walk(item, maxLvl, colAt, lvl + 1)); li.appendChild(document.createTextNode(itemIsArray ? "]" : "}")); var list = li.querySelector("ul"); var itemLinkCb = function() { itemLink.classList.toggle("collapsed"); itemsCount.classList.toggle("hide"); list.classList.toggle("hide"); }; // hide/show itemLink.addEventListener("click", itemLinkCb); // collapse lower level if (colAt >= 0 && lvl + 1 >= colAt) { itemLinkCb(); } } } } // simple values else { // object keys with key: if (!isArray) { li.appendChild(document.createTextNode(key + ": ")); } // recursive li.appendChild(this._walk(item, maxLvl, colAt, lvl + 1)); } // add comma to the end if (ind < len) { li.appendChild(document.createTextNode(",")); } ulList.appendChild(li); }, this); frag.appendChild(ulList); } else if (items.length && isMaxLvl) { var itemsCount = this._createItemsCount(items.length); itemsCount.classList.remove("hide"); frag.appendChild(itemsCount); } if (lvl === 0) { // empty root if (!items.length) { var itemsCount = this._createItemsCount(0); itemsCount.classList.remove("hide"); frag.appendChild(itemsCount); } // root cover frag.appendChild(document.createTextNode(isArray ? "]" : "}")); // collapse if (isCollapse) { frag.querySelector("ul").classList.add("hide"); } } break; } default: // simple values frag.appendChild(this._createSimple(value)); break; } return frag; }; /** * Create simple value (no object|array). * * @param {Number|String|null|undefined|Date} value Input value * @return {Element} */ JSONViewer.prototype._createSimple = function(value) { var spanEl = document.createElement("span"); var type = typeof value; var txt = value; if (type === "string") { txt = '"' + value + '"'; } else if (value === null) { type = "null"; txt = "null"; } else if (value === undefined) { txt = "undefined"; } else if (value instanceof Date) { type = "date"; txt = value.toString(); } spanEl.classList.add("type-" + type); spanEl.innerHTML = txt; return spanEl; }; /** * Create items count element. * * @param {Number} count Items count * @return {Element} */ JSONViewer.prototype._createItemsCount = function(count) { var itemsCount = document.createElement("span"); itemsCount.classList.add("items-ph"); itemsCount.classList.add("hide"); itemsCount.innerHTML = this._getItemsTitle(count); return itemsCount; }; /** * Create clickable link. * * @param {String} title Link title * @return {Element} */ JSONViewer.prototype._createLink = function(title) { var linkEl = document.createElement("a"); linkEl.classList.add("list-link"); linkEl.href = "javascript:void(0)"; linkEl.innerHTML = title || ""; return linkEl; }; /** * Get correct item|s title for count. * * @param {Number} count Items count * @return {String} */ JSONViewer.prototype._getItemsTitle = function(count) { var itemsTxt = count > 1 || count === 0 ? "items" : "item"; return (count + " " + itemsTxt); }; return JSONViewer; })(); var jsonObj = {}; var jsonViewer = new JSONViewer(); document.querySelector("#json").appendChild(jsonViewer.getContainer()); var textarea = document.querySelector("textarea"); textarea.value = JSON.stringify([ { "links": { "self": "http://example.com/articles", "next": "http://example.com/articles?page[offset]=2", "last": "http://example.com/articles?page[offset]=10" }, "data": [{ "type": "articles", "id": "1", "attributes": { "title": "JSON:API paints my bikeshed!" }, "relationships": { "author": { "links": { "self": "http://example.com/articles/1/relationships/author", "related": "http://example.com/articles/1/author" }, "data": { "type": "people", "id": "9" } }, "comments": { "links": { "self": "http://example.com/articles/1/relationships/comments", "related": "http://example.com/articles/1/comments" }, "data": [ { "type": "comments", "id": "5" }, { "type": "comments", "id": "12" } ] } }, "links": { "self": "http://example.com/articles/1" } }], "included": [{ "type": "people", "id": "9", "attributes": { "firstName": "Dan", "lastName": "Gebhardt", "twitter": "dgeb" }, "links": { "self": "http://example.com/people/9" } }, { "type": "comments", "id": "5", "attributes": { "body": "First!" }, "relationships": { "author": { "data": { "type": "people", "id": "2" } } }, "links": { "self": "http://example.com/comments/5" } }, { "type": "comments", "id": "12", "attributes": { "body": "I like XML better" }, "relationships": { "author": { "data": { "type": "people", "id": "9" } } }, "links": { "self": "http://example.com/comments/12" } }] } ]); // textarea value to JSON object var setJSON = function () { try { var value = textarea.value; jsonObj = JSON.parse(value); } catch (err) { alert(err); } }; // load default value setJSON(); var loadJsonBtn = document.querySelector("button.load-json"); var collapseBtn = document.querySelector("button.collapse"); var expandBtn = document.querySelector("button.expand"); var resetBtn = document.querySelector("button.reset"); loadJsonBtn.addEventListener("click", function () { setJSON(); jsonViewer.showJSON(jsonObj); }); collapseBtn.addEventListener("click", function () { jsonViewer.showJSON(jsonObj, null, 1); }); expandBtn.addEventListener("click", function () { setJSON(); jsonViewer.showJSON(jsonObj); }); resetBtn.addEventListener("click", function () { document.getElementById("msg").value = ""; }); |
That’s It. Now you have successfully created JSON Formatter & Beautifier with Tree View, Beautify JSON Codes Online program. If you have any doubt or question comment down below.
Thanks For Visiting, Keep Visiting.
We found an amazing online tool that formats JSON objects. This beautifies JSON is easily readable by humans.
{
“name”:”Jhon”,
“title”:”Author”,
“country”:”USA”
}