将 json 数据以美观的缩进格式显示出来,借助最简单的 JSON.stringify 函数就可以了,因为此函数还有不常用的后面2个参数。
见MDN https://developer.mozilla.org/zh-CN/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify 的描述。
示例代码如下:
<html> <head> <meta charset="utf-8" /> <title>hello</title> <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> <script type="text/javascript"> 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*:)?|(true|false|null)|-?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>"; }); } </script> </head> <body> <pre id="result"> </pre> <script type="text/javascript"> var songResJson={ "service": "ALL", "qt": 581, "content": { "answer": { "song": "如果缘只到遇见", "album": "如果缘只到遇见", "artist": "吴奇隆 严艺丹", "pic_url": "http://p1.music.126.net/-u3WgIXsFNCW7d8Jy7pCEA==/5921969627395387.jpg" }, "scene": "music" } } document.getElementById("result").innerHTML = syntaxHighlight(songResJson); // $("#result").html(syntaxHighlight(songResJson)); </script> </body> </html>
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