javascript格式化json显示

// Example usage: http://jsfiddle.net/q2gnX/
 
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, \'\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;
};

使用方法：

var json={"name":"HTL","sex":"男","age":"24"};
console.log(formatJson(json));

//该代码片段来自于: http://www.sharejs.com/codes/javascript/5452

来自为知笔记(Wiz)