此文章原创~
我们经常会用到在线json格式化工具,but ,之前接过一个需求,自己做json格式化功能。
废话不说了,上代码,博客园的代码可以格式化就好了
html: ( 注:contenteditable="true" 表示可以对该标签进行编辑,变成input进行输入,ps:很好用)
<div class="top-oprate"> <span class="json-viewer">格式化</span> </div> <div class="script-content common-shadow"> <div class="json-area"> <pre class="json-renderer" placeholder="请输入脚本" contenteditable="true"> </pre> </div> </div>
格式化封装: (注:此js非原创,看的是其他大大的)
/** * Check if arg is either an array with at least 1 element, or a dict with at least 1 key * @return boolean */ function isCollapsable(arg) { return arg instanceof Object && Object.keys(arg).length > 0; } /** * Check if a string represents a valid url * @return boolean */ function isUrl(string) { var regexp = /^(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/; return regexp.test(string); } /** * Transform a json object into html representation * @return string */ function json2html(json, options) { var html = ''; if (typeof json === 'string') { /* Escape tags */ json = json.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>'); if (isUrl(json)) html += '<a href="' + json + '" class="json-string">' + json + '</a>'; else html += '<span class="json-string">"' + json + '"</span>'; } else if (typeof json === 'number') { html += '<span class="json-literal">' + json + '</span>'; } else if (typeof json === 'boolean') { html += '<span class="json-literal">' + json + '</span>'; } else if (json === null) { html += '<span class="json-literal">null</span>'; } else if (json instanceof Array) { if (json.length > 0) { html += '[<ol class="json-array">'; for (var i = 0; i < json.length; ++i) { html += '<li>'; /* Add toggle button if item is collapsable */ if (isCollapsable(json[i])) { html += '<a href class="json-toggle"></a>'; } html += json2html(json[i], options); /* Add comma if item is not last */ if (i < json.length - 1) { html += ','; } html += '</li>'; } html += '</ol>]'; } else { html += '[]'; } } else if (typeof json === 'object') { var key_count = Object.keys(json).length; if (key_count > 0) { html += '{<ul class="json-dict">'; for (var key in json) { if (json.hasOwnProperty(key)) { html += '<li>'; var keyRepr = options.withQuotes ? '<span class="json-string">"' + key + '"</span>' : key; /* Add toggle button if item is collapsable */ if (isCollapsable(json[key])) { html += '<a href class="json-toggle">' + keyRepr + '</a>'; } else { html += keyRepr; } html += ': ' + json2html(json[key], options); /* Add comma if item is not last */ if (--key_count > 0) html += ','; html += '</li>'; } } html += '</ul>}'; } else { html += '{}'; } } return html; } /** * jQuery plugin method * @param json: a javascript object * @param options: an optional options hash */ $.fn.jsonViewer = function(json, options) { options = options || {}; /* jQuery chaining */ return this.each(function() { /* Transform to HTML */ var html = json2html(json, options); if (isCollapsable(json)) html = '<a href class="json-toggle"></a>' + html; /* Insert HTML in target DOM element */ $(this).html(html); /* Bind click on toggle buttons */ $(this).off('click'); $(this).on('click', 'a.json-toggle', function() { var target = $(this).toggleClass('collapsed').siblings('ul.json-dict, ol.json-array'); target.toggle(); if (target.is(':visible')) { target.siblings('.json-placeholder').remove(); } else { var count = target.children('li').length; var placeholder = count + (count > 1 ? ' items' : ' item'); target.after('<a href class="json-placeholder">' + placeholder + '</a>'); } return false; }); /* Simulate click on toggle button when placeholder is clicked */ $(this).on('click', 'a.json-placeholder', function() { $(this).siblings('a.json-toggle').click(); return false; }); if (options.collapsed == true) { /* Trigger click to collapse all nodes */ $(this).find('a.json-toggle').click(); } }); };
应用js:
//绑定事件 $(document) //json格式化 .on('click', '.json-viewer', jsonView) //json格式化 jsonView:function(){ try { /*var input = eval('(' + $('.json-renderer').text() + ')');这个方法也可以的,但貌似eval用起来不太安全*/ var input = JSON.parse($('.json-renderer').text()); } catch(error) { alert("出错啦,请仔细检查!"); return; } var options = { collapsed: false, withQuotes: true }; $('.json-renderer').jsonViewer(input,options); }
css就不帖了,都是浮云
效果是这样的
然后点击格式化
完美,至今都没出现过bug,不过还可以优化优化