本文实例讲述了javascript格式化json显示方法。分享给大家供大家参考。具体分析如下：

将json对象或者json字符串格式化方便在网页上限制

var formatJson = function(json, options) { var reg = null, formatted = '', pad = 0, PADDING = ''; //one can also use 't' or a different number of spaces // optional settings options = options || {}; // remove newline where '{' or '[' follows ':' options.newlineAfterColonIfBeforeBraceOrBracket = (options.newlineAfterColonIfBeforeBraceOrBracket === true) ? true : false; // use a space after a colon options.spaceAfterColon = (options.spaceAfterColon === false) ? false : true; // begin formatting... if (typeof json !== 'string') { // make sure we start with the JSON as a string json = JSON.stringify(json); } else { // is already a string, so parse and re-stringify //in order to remove extra whitespace json = JSON.parse(json); json = JSON.stringify(json); } // add newline before and after curly braces reg = /([{}])/g; json = json.replace(reg, 'rn$1rn'); // add newline before and after square brackets reg = /([[]])/g; json = json.replace(reg, 'rn$1rn'); // add newline after comma reg = /(,)/g; json = json.replace(reg, '$1rn'); // remove multiple newlines reg = /(rnrn)/g; json = json.replace(reg, 'rn'); // remove newlines before commas reg = /rn,/g; json = json.replace(reg, ','); // optional formatting... if (!options.newlineAfterColonIfBeforeBraceOrBracket) { reg = /:rn{/g; json = json.replace(reg, ':{'); reg = /:rn[/g; json = json.replace(reg, ':['); } if (options.spaceAfterColon) { reg = /:/g; json = json.replace(reg, ': '); } $.each(json.split('rn'), function(index, node) { var i = 0, indent = 0, padding = ''; if (node.match(/{$/) || node.match(/[$/)) { indent = 1; } else if (node.match(/}/) || node.match(/]/)) { if (pad !== 0) { pad -= 1; } } else { indent = 0; } for (i = 0; i < pad; i++) { padding += PADDING; } formatted += padding + node + 'rn'; pad += indent; }); return formatted; };

关于json格式化感兴趣的朋友还可参考在线工具：

JSON代码工具

希望本文所述对大家的javascript程序设计有所帮助。