JS 格式化 JSON

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...      // make sure we start with the JSON as a string      if (typeof json !== 'string') {        json = JSON.stringify(json);      }      // parse and 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, '\r\n$1\r\n');      // add newline before and after square brackets      reg = /([\[\]])/g;      json = json.replace(reg, '\r\n$1\r\n');      // add newline after comma      reg = /(\,)/g;      json = json.replace(reg, '$1\r\n');      // remove multiple newlines      reg = /(\r\n\r\n)/g;      json = json.replace(reg, '\r\n');      // remove newlines before commas      reg = /\r\n\,/g;      json = json.replace(reg, ',');      // optional formatting...      if (!options.newlineAfterColonIfBeforeBraceOrBracket) {             reg = /\:\r\n\{/g;        json = json.replace(reg, ':{');        reg = /\:\r\n\[/g;        json = json.replace(reg, ':[');      }      if (options.spaceAfterColon) {              reg = /\:/g;        json = json.replace(reg, ': ');      }      $.each(json.split('\r\n'), function(index, node) {        var i = 0,          indent = 0,          padding = '';        if (node.match(/\{$/) || 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 + '\r\n';        pad += indent;      });      return formatted;};

调用方式：

var json = [{"Sequence":6,"CallerAppID":"","Status":"enabled","_Id":"586b5cfe594b7e0007be4dc8","Name":"SSSSS","Key":"4XOVrx1iEp8mNdTGspBf1ntfLxfDcYqZgF4fein_XchA_z0PSSFqJvyyUgKn-QiK"},{"Sequence":7,"CallerAppID":"","Status":"enabled","_Id":"586b5d0a594b7e0007be4dc9","Name":"TRTRTRT","Key":"3GLN9walQDcysH41sgFKlelPqOVo5QEwS9-6t6nEH2uYIuXMIu33h6Th057ack1U"},{"Sequence":8,"CallerAppID":"","Status":"enabled","_Id":"586b5d96594b7e0007be4dca","Name":"555555","Key":"I9heBlJEzqxY5HscH6EJwvV4LYKnO4q49bFAxHw_7bO7e489wZbO8QH7-NuUKxUT"}];$("#back_result").html(formatJson(json));

输出格式：

[    {        "Sequence": 6,        "CallerAppID": "",        "Status": "enabled",        "_Id": "586b5cfe594b7e0007be4dc8",        "Name": "SSSSS",        "Key": "4XOVrx1iEp8mNdTGspBf1ntfLxfDcYqZgF4fein_XchA_z0PSSFqJvyyUgKn-QiK"    },    {        "Sequence": 7,        "CallerAppID": "",        "Status": "enabled",        "_Id": "586b5d0a594b7e0007be4dc9",        "Name": "TRTRTRT",        "Key": "3GLN9walQDcysH41sgFKlelPqOVo5QEwS9-6t6nEH2uYIuXMIu33h6Th057ack1U"    },    {        "Sequence": 8,        "CallerAppID": "",        "Status": "enabled",        "_Id": "586b5d96594b7e0007be4dca",        "Name": "555555",        "Key": "I9heBlJEzqxY5HscH6EJwvV4LYKnO4q49bFAxHw_7bO7e489wZbO8QH7-NuUKxUT"    }]