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/** |
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* jQuery json-viewer |
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* @author: Alexandre Bodelot <[email protected]> |
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* @link: https://github.com/abodelot/jquery.json-viewer |
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*/ |
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(function($) { |
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|
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/** |
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* Check if arg is either an array with at least 1 element, or a dict with at least 1 key |
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* @return boolean |
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*/ |
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function isCollapsable(arg) { |
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return arg instanceof Object && Object.keys(arg).length > 0; |
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} |
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|
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/** |
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* Check if a string represents a valid url |
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* @return boolean |
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*/ |
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function isUrl(string) { |
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var urlRegexp = /^(https?:\/\/|ftps?:\/\/)?([a-z0-9%-]+\.){1,}([a-z0-9-]+)?(:(\d{1,5}))?(\/([a-z0-9\-._~:/?#[\]@!$&'()*+,;=%]+)?)?$/i; |
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return urlRegexp.test(string); |
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} |
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|
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/** |
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* Transform a json object into html representation |
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* @return string |
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*/ |
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function json2html(json, options) { |
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var html = ''; |
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if (typeof json === 'string') { |
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// Escape tags and quotes |
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json = json |
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.replace(/&/g, '&') |
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.replace(/</g, '<') |
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.replace(/>/g, '>') |
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.replace(/'/g, ''') |
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.replace(/"/g, '"'); |
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|
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if (options.withLinks && isUrl(json)) { |
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html += '<a href="' + json + '" class="json-string" target="_blank">' + json + '</a>'; |
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} else { |
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// Escape double quotes in the rendered non-URL string. |
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json = json.replace(/"/g, '\\"'); |
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html += '<span class="json-string">"' + json + '"</span>'; |
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} |
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} else if (typeof json === 'number') { |
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html += '<span class="json-literal">' + json + '</span>'; |
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} else if (typeof json === 'boolean') { |
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html += '<span class="json-literal">' + json + '</span>'; |
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} else if (json === null) { |
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html += '<span class="json-literal">null</span>'; |
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} else if (json instanceof Array) { |
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if (json.length > 0) { |
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html += '[<ol class="json-array">'; |
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for (var i = 0; i < json.length; ++i) { |
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html += '<li>'; |
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// Add toggle button if item is collapsable |
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if (isCollapsable(json[i])) { |
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html += '<a href class="json-toggle"></a>'; |
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} |
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html += json2html(json[i], options); |
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// Add comma if item is not last |
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if (i < json.length - 1) { |
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html += ','; |
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} |
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html += '</li>'; |
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} |
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html += '</ol>]'; |
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} else { |
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html += '[]'; |
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} |
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} else if (typeof json === 'object') { |
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var keyCount = Object.keys(json).length; |
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if (keyCount > 0) { |
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html += '{<ul class="json-dict">'; |
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for (var key in json) { |
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if (Object.prototype.hasOwnProperty.call(json, key)) { |
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html += '<li>'; |
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var keyRepr = options.withQuotes ? |
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'<span class="json-string">"' + key + '"</span>' : key; |
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// Add toggle button if item is collapsable |
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if (isCollapsable(json[key])) { |
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html += '<a href class="json-toggle">' + keyRepr + '</a>'; |
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} else { |
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html += keyRepr; |
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} |
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html += ': ' + json2html(json[key], options); |
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// Add comma if item is not last |
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if (--keyCount > 0) { |
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html += ','; |
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} |
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html += '</li>'; |
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} |
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} |
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html += '</ul>}'; |
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} else { |
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html += '{}'; |
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} |
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} |
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return html; |
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} |
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|
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/** |
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* jQuery plugin method |
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* @param json: a javascript object |
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* @param options: an optional options hash |
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*/ |
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$.fn.jsonViewer = function(json, options) { |
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// Merge user options with default options |
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options = Object.assign({}, { |
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collapsed: false, |
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rootCollapsable: true, |
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withQuotes: false, |
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withLinks: true |
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}, options); |
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|
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// jQuery chaining |
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return this.each(function() { |
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|
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// Transform to HTML |
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var html = json2html(json, options); |
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if (options.rootCollapsable && isCollapsable(json)) { |
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html = '<a href class="json-toggle"></a>' + html; |
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} |
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|
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// Insert HTML in target DOM element |
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$(this).html(html); |
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$(this).addClass('json-document'); |
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|
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// Bind click on toggle buttons |
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$(this).off('click'); |
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$(this).on('click', 'a.json-toggle', function() { |
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var target = $(this).toggleClass('collapsed').siblings('ul.json-dict, ol.json-array'); |
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target.toggle(); |
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if (target.is(':visible')) { |
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target.siblings('.json-placeholder').remove(); |
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} else { |
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var count = target.children('li').length; |
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var placeholder = count + (count > 1 ? ' items' : ' item'); |
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target.after('<a href class="json-placeholder">' + placeholder + '</a>'); |
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} |
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return false; |
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}); |
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|
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// Simulate click on toggle button when placeholder is clicked |
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$(this).on('click', 'a.json-placeholder', function() { |
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$(this).siblings('a.json-toggle').click(); |
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return false; |
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}); |
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|
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if (options.collapsed == true) { |
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// Trigger click to collapse all nodes |
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$(this).find('a.json-toggle').click(); |
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} |
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}); |
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}; |
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})(jQuery); |
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