JSON.stringify(res, null, 2); //res是要JSON化的對象，2是spacing

function syntaxHighlight(json) {
 if (typeof json != 'string') {
 json = JSON.stringify(json, undefined, 2);
 }
 json = json.replace(/&/g, '&').replace(/</g, '<').replace(/>/g, '>');
 return json.replace(/("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g, function(match) {
 var cls = 'number';
 if (/^"/.test(match)) {
 if (/:$/.test(match)) {
 cls = 'key';
 } else {
 cls = 'string';
 }
 } else if (/true|false/.test(match)) {
 cls = 'boolean';
 } else if (/null/.test(match)) {
 cls = 'null';
 }
 return '<span class="' + cls + '">' + match + '</span>';
 });
}

<style>
 pre {outline: 1px solid #ccc; padding: 5px; margin: 5px; }
 .string { color: green; }
 .number { color: darkorange; }
 .boolean { color: blue; }
 .null { color: magenta; }
 .key { color: red; }
</style>

<pre id="result">
</pre>

$('#result').html(syntaxHighlight(res));