摘要：
假：真；//开始信息…if（typeofjson！==‘string'）｛//确保使用JSONasastringson=JSON.stringfy（JSON）；｝否则｛//isalreadyastring，soparseandre stringifyinordertoremoveextrawhitespacejson=JSON.parse（JSON）；JSON=JSON.stringify（JSON）；｝//在当前bracesreg=/（[｛｝]）/g之前添加新行；json=json。replace（reg，“$1”）；//在方括号reg=/（[[]]）/g之前添加换行符；json=json。replace（reg，“$1”）；//addnewlineaftercmmareg=/（\，）/g；json=json。replace（reg，“$1”）；//removemultiplenewlinesreg=/（）/g；json=json。replace（reg，''）；//removewlinesbeforecommasreg=/\，/g；json=json。replace（reg，'，'）；//optionalformating…if（！==0）｛pad-=1；｝｝否则｛indent=0；｝对于（i=0；i˂pad；i++）{padding+=padding；}格式化+=填充+节点+“”；pad+=缩进；}）；returnformated；｝；varstr1='{“name”：“xiaol”，“sex”：“man”}'；formatJson（str1）｛“name”：“xiaol”，“sex”：“man”｝
var formatJson = function(json, options) {
var reg = null,
formatted = '',
pad = 0,
PADDING = ' '; // one can also use ' ' 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, '
$1
');
// add newline before and after square brackets
reg = /([[]])/g;
json = json.replace(reg, '
$1
');
// add newline after comma
reg = /(\,)/g;
json = json.replace(reg, '$1
');
// remove multiple newlines
reg = /(
)/g;
json = json.replace(reg, '
');
// remove newlines before commas
reg = /
\,/g;
json = json.replace(reg, ',');
// optional formatting...
if (!options.newlineAfterColonIfBeforeBraceOrBracket) {
reg = /:
{/g;
json = json.replace(reg, ':{');
reg = /:
[/g;
json = json.replace(reg, ':[');
}
if (options.spaceAfterColon) {
reg = /:/g;
json = json.replace(reg, ': ');
}
$.each(json.split('
'), function(index, node) {
var i = 0,
indent = 0,
padding = '';
if (node.match(/{$/) || 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 + '
';
pad += indent;
});
return formatted;
};
var str1 = '{ "name": "xiaol", "sex": "man" }';
formatJson(str1)
{
"name": "xiaol",
"sex": "man"
}