我JSON.stringify是一个 json 对象
result = JSON.stringify(message, my_json, 2)
上面参数中的2应该漂亮地打印结果。如果我做类似的事情，它会这样做alert(result)。但是，我想通过将其附加到 div 中来将其输出给用户。当我这样做时，我只会显示一条线。（我认为它不起作用，因为中断和空格没有被解释为 html？）
{ "data": { "x": "1", "y": "1", "url": "http://url.com" }, "event": "start", "show": 1, "id": 50 }
有没有办法以JSON.stringify漂亮的打印方式将结果输出到 div？
请使用<pre> 标签
演示：http: //jsfiddle.net/K83cK/
var data = {
"data": {
"x": "1",
"y": "1",
"url": "http://url.com"
},
"event": "start",
"show": 1,
"id": 50
}
document.getElementById("json").textContent = JSON.stringify(data, undefined, 2);<pre id="json"></pre>确保 JSON 输出位于<pre>标签中。
如果您的<pre>标签显示单行 JSON，因为这就是已经提供字符串的方式（通过 api 或您无法控制的某些函数/页面），您可以像这样重新格式化它：
HTML：
<pre id="json">{"some":"JSON string"}</pre>
JavaScript：
(function() {
var element = document.getElementById("json");
var obj = JSON.parse(element.innerText);
element.innerHTML = JSON.stringify(obj, undefined, 2);
})();
或 jQuery：
$(formatJson);
function formatJson() {
var element = $("#json");
var obj = JSON.parse(element.text());
element.html(JSON.stringify(obj, undefined, 2));
}
我的建议基于：
var x = { "data": { "x": "1", "y": "1", "url": "http://url.com" }, "event": "start", "show": 1, "id": 50 };
document.querySelector('#newquote').innerHTML = JSON.stringify(x, null, 6)
.replace(/\n( *)/g, function (match, p1) {
return '<br>' + ' '.repeat(p1.length);
});<div id="newquote"></div>完全披露我是这个包的作者，但另一种以可读方式输出 JSON 或 JavaScript 对象的方法是，可以跳过部分、折叠它们等nodedump，https://github.com/ragamufin/nodedump
考虑您的 REST API 返回：
{"Intent":{"Command":"search","SubIntent":null}}
然后您可以执行以下操作以良好的格式打印它：
<pre id="ciResponseText">Output will de displayed here.</pre>
var ciResponseText = document.getElementById('ciResponseText');
var obj = JSON.parse(http.response);
ciResponseText.innerHTML = JSON.stringify(obj, undefined, 2);
很多人对这些问题做出了非常奇怪的回答，这使得工作量超出了必要的范围。
最简单的方法包括以下内容
在实际代码中，一个示例将是（将所有步骤组合在一起）：
var input = document.getElementById("input").value;
document.getElementById("output").value = JSON.stringify(JSON.parse(input),undefined,2);
output.value 将是您想要显示美化 JSON 的区域。
使用 JSX 打印组件的状态
render() {
return (
<div>
<h1>Adopt Me!</h1>
<pre>
<code>{JSON.stringify(this.state, null, 4)}</code>
</pre>
</div>
);
}
如果这真的是为用户准备的，比仅仅输出文本更好，你可以使用像这样的库https://github.com/padolsey/prettyprint.js将其输出为 HTML 表格。
使用 style标签还会修改文本格式white-space: pre，<pre>这可能是不受欢迎的。
你可以试试这个存储库： https ://github.com/amelki/json-pretty-html
如果你使用 React，你也可以使用 react-json-tree 包。
我为它创建了一个像下面这样接受数据道具的组件。
import React from 'react';
import JSONTree from 'react-json-tree'
import './style.css';
const theme = {
scheme: 'monokai',
base00: '#272822',
base01: '#383830',
base02: '#49483e',
base03: '#75715e',
base04: '#a59f85',
base05: '#f8f8f2',
base06: '#f5f4f1',
base07: '#f9f8f5',
base08: '#f92672',
base09: '#fd971f',
base0A: '#f4bf75',
base0B: '#a6e22e',
base0C: '#a1efe4',
base0D: '#66d9ef',
base0E: '#ae81ff',
base0F: '#cc6633',
};
const TreeView = (props) => {
return (
<div className="tree-container">
<JSONTree
data={props.data}
theme={theme}
invertTheme={true}
hideRoot
labelRenderer={([key]) => {
return <strong>{key}:</strong>
}}
valueRenderer={(valueAsString, value) => {
return <span className="capitalize">{value}</span>;
}}
getItemString={() => ''}
/>
</div>
);
}
export default TreeView;
然后我在导入组件后在下面的 html 元素中使用它。
<div>
<TreeView data={s.value} />
</div>
对于那些想要显示可折叠 json 的人可以使用renderjson
这是通过在 html 中嵌入渲染 js javascript 的示例
<!DOCTYPE html>
<html>
<head>
<script type="application/javascript">
// Copyright © 2013-2014 David Caldwell <david@porkrind.org>
//
// Permission to use, copy, modify, and/or distribute this software for any
// purpose with or without fee is hereby granted, provided that the above
// copyright notice and this permission notice appear in all copies.
//
// THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
// WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
// MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
// SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
// WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
// OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
// CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
// Usage
// -----
// The module exports one entry point, the `renderjson()` function. It takes in
// the JSON you want to render as a single argument and returns an HTML
// element.
//
// Options
// -------
// renderjson.set_icons("+", "-")
// This Allows you to override the disclosure icons.
//
// renderjson.set_show_to_level(level)
// Pass the number of levels to expand when rendering. The default is 0, which
// starts with everything collapsed. As a special case, if level is the string
// "all" then it will start with everything expanded.
//
// renderjson.set_max_string_length(length)
// Strings will be truncated and made expandable if they are longer than
// `length`. As a special case, if `length` is the string "none" then
// there will be no truncation. The default is "none".
//
// renderjson.set_sort_objects(sort_bool)
// Sort objects by key (default: false)
//
// Theming
// -------
// The HTML output uses a number of classes so that you can theme it the way
// you'd like:
// .disclosure ("⊕", "⊖")
// .syntax (",", ":", "{", "}", "[", "]")
// .string (includes quotes)
// .number
// .boolean
// .key (object key)
// .keyword ("null", "undefined")
// .object.syntax ("{", "}")
// .array.syntax ("[", "]")
var module;
(module || {}).exports = renderjson = (function () {
var themetext = function (/* [class, text]+ */) {
var spans = [];
while (arguments.length)
spans.push(append(span(Array.prototype.shift.call(arguments)),
text(Array.prototype.shift.call(arguments))));
return spans;
};
var append = function (/* el, ... */) {
var el = Array.prototype.shift.call(arguments);
for (var a = 0; a < arguments.length; a++)
if (arguments[a].constructor == Array)
append.apply(this, [el].concat(arguments[a]));
else
el.appendChild(arguments[a]);
return el;
};
var prepend = function (el, child) {
el.insertBefore(child, el.firstChild);
return el;
}
var isempty = function (obj) {
for (var k in obj) if (obj.hasOwnProperty(k)) return false;
return true;
}
var text = function (txt) { return document.createTextNode(txt) };
var div = function () { return document.createElement("div") };
var span = function (classname) {
var s = document.createElement("span");
if (classname) s.className = classname;
return s;
};
var A = function A(txt, classname, callback) {
var a = document.createElement("a");
if (classname) a.className = classname;
a.appendChild(text(txt));
a.href = '#';
a.onclick = function () { callback(); return false; };
return a;
};
function _renderjson(json, indent, dont_indent, show_level, max_string, sort_objects) {
var my_indent = dont_indent ? "" : indent;
var disclosure = function (open, placeholder, close, type, builder) {
var content;
var empty = span(type);
var show = function () {
if (!content) append(empty.parentNode,
content = prepend(builder(),
A(renderjson.hide, "disclosure",
function () {
content.style.display = "none";
empty.style.display = "inline";
})));
content.style.display = "inline";
empty.style.display = "none";
};
append(empty,
A(renderjson.show, "disclosure", show),
themetext(type + " syntax", open),
A(placeholder, null, show),
themetext(type + " syntax", close));
var el = append(span(), text(my_indent.slice(0, -1)), empty);
if (show_level > 0)
show();
return el;
};
if (json === null) return themetext(null, my_indent, "keyword", "null");
if (json === void 0) return themetext(null, my_indent, "keyword", "undefined");
if (typeof (json) == "string" && json.length > max_string)
return disclosure('"', json.substr(0, max_string) + " ...", '"', "string", function () {
return append(span("string"), themetext(null, my_indent, "string", JSON.stringify(json)));
});
if (typeof (json) != "object") // Strings, numbers and bools
return themetext(null, my_indent, typeof (json), JSON.stringify(json));
if (json.constructor == Array) {
if (json.length == 0) return themetext(null, my_indent, "array syntax", "[]");
return disclosure("[", " ... ", "]", "array", function () {
var as = append(span("array"), themetext("array syntax", "[", null, "\n"));
for (var i = 0; i < json.length; i++)
append(as,
_renderjson(json[i], indent + " ", false, show_level - 1, max_string, sort_objects),
i != json.length - 1 ? themetext("syntax", ",") : [],
text("\n"));
append(as, themetext(null, indent, "array syntax", "]"));
return as;
});
}
// object
if (isempty(json))
return themetext(null, my_indent, "object syntax", "{}");
return disclosure("{", "...", "}", "object", function () {
var os = append(span("object"), themetext("object syntax", "{", null, "\n"));
for (var k in json) var last = k;
var keys = Object.keys(json);
if (sort_objects)
keys = keys.sort();
for (var i in keys) {
var k = keys[i];
append(os, themetext(null, indent + " ", "key", '"' + k + '"', "object syntax", ': '),
_renderjson(json[k], indent + " ", true, show_level - 1, max_string, sort_objects),
k != last ? themetext("syntax", ",") : [],
text("\n"));
}
append(os, themetext(null, indent, "object syntax", "}"));
return os;
});
}
var renderjson = function renderjson(json) {
var pre = append(document.createElement("pre"), _renderjson(json, "", false, renderjson.show_to_level, renderjson.max_string_length, renderjson.sort_objects));
pre.className = "renderjson";
return pre;
}
renderjson.set_icons = function (show, hide) {
renderjson.show = show;
renderjson.hide = hide;
return renderjson;
};
renderjson.set_show_to_level = function (level) {
renderjson.show_to_level = typeof level == "string" &&
level.toLowerCase() === "all" ? Number.MAX_VALUE
: level;
return renderjson;
};
renderjson.set_max_string_length = function (length) {
renderjson.max_string_length = typeof length == "string" &&
length.toLowerCase() === "none" ? Number.MAX_VALUE
: length;
return renderjson;
};
renderjson.set_sort_objects = function (sort_bool) {
renderjson.sort_objects = sort_bool;
return renderjson;
};
// Backwards compatiblity. Use set_show_to_level() for new code.
renderjson.set_show_by_default = function (show) {
renderjson.show_to_level = show ? Number.MAX_VALUE : 0;
return renderjson;
};
renderjson.set_icons('⊕', '⊖');
renderjson.set_show_by_default(false);
renderjson.set_sort_objects(false);
renderjson.set_max_string_length("none");
return renderjson;
})();
</script>
</head>
<body>
<div id="dest"></div>
</body>
<script type="application/javascript">
document.getElementById("dest").appendChild(
renderjson.set_show_by_default(true)
//.set_show_to_level(2)
//.set_sort_objects(true)
//.set_icons('+', '-')
.set_max_string_length(100)
([
{
"glossary": {
"title": "example glossary",
"GlossDiv": {
"title": "S",
"GlossList": {
"GlossEntry": {
"ID": "SGML",
"SortAs": "SGML",
"GlossTerm": "Standard Generalized Markup Language",
"Acronym": "SGML",
"Abbrev": "ISO 8879:1986",
"GlossDef": {
"para": "A meta-markup language, used to create markup languages such as DocBook.",
"GlossSeeAlso": ["GML", "XML"]
},
"GlossSee": "markup"
}
}
}
}
},
{
"menu": {
"id": "file",
"value": "File",
"popup": {
"menuitem": [
{ "value": "New", "onclick": "CreateNewDoc()" },
{ "value": "Open", "onclick": "OpenDoc()" },
{ "value": "Close", "onclick": "CloseDoc()" }
]
}
}
},
{
"widget": {
"debug": "on",
"window": {
"title": "Sample Konfabulator Widget",
"name": "main_window",
"width": 500,
"height": 500
},
"image": {
"src": "Images/Sun.png",
"name": "sun1",
"hOffset": 250,
"vOffset": 250,
"alignment": "center"
},
"text": {
"data": "Click Here",
"size": 36,
"style": "bold",
"name": "text1",
"hOffset": 250,
"vOffset": 100,
"alignment": "center",
"onMouseUp": "sun1.opacity = (sun1.opacity / 100) * 90;"
}
}
},
{
"web-app": {
"servlet": [
{
"servlet-name": "cofaxCDS",
"servlet-class": "org.cofax.cds.CDSServlet",
"init-param": {
"configGlossary:installationAt": "Philadelphia, PA",
"configGlossary:adminEmail": "ksm@pobox.com",
"configGlossary:poweredBy": "Cofax",
"configGlossary:poweredByIcon": "/images/cofax.gif",
"configGlossary:staticPath": "/content/static",
"templateProcessorClass": "org.cofax.WysiwygTemplate",
"templateLoaderClass": "org.cofax.FilesTemplateLoader",
"templatePath": "templates",
"templateOverridePath": "",
"defaultListTemplate": "listTemplate.htm",
"defaultFileTemplate": "articleTemplate.htm",
"useJSP": false,
"jspListTemplate": "listTemplate.jsp",
"jspFileTemplate": "articleTemplate.jsp",
"cachePackageTagsTrack": 200,
"cachePackageTagsStore": 200,
"cachePackageTagsRefresh": 60,
"cacheTemplatesTrack": 100,
"cacheTemplatesStore": 50,
"cacheTemplatesRefresh": 15,
"cachePagesTrack": 200,
"cachePagesStore": 100,
"cachePagesRefresh": 10,
"cachePagesDirtyRead": 10,
"searchEngineListTemplate": "forSearchEnginesList.htm",
"searchEngineFileTemplate": "forSearchEngines.htm",
"searchEngineRobotsDb": "WEB-INF/robots.db",
"useDataStore": true,
"dataStoreClass": "org.cofax.SqlDataStore",
"redirectionClass": "org.cofax.SqlRedirection",
"dataStoreName": "cofax",
"dataStoreDriver": "com.microsoft.jdbc.sqlserver.SQLServerDriver",
"dataStoreUrl": "jdbc:microsoft:sqlserver://LOCALHOST:1433;DatabaseName=goon",
"dataStoreUser": "sa",
"dataStorePassword": "dataStoreTestQuery",
"dataStoreTestQuery": "SET NOCOUNT ON;select test='test';",
"dataStoreLogFile": "/usr/local/tomcat/logs/datastore.log",
"dataStoreInitConns": 10,
"dataStoreMaxConns": 100,
"dataStoreConnUsageLimit": 100,
"dataStoreLogLevel": "debug",
"maxUrlLength": 500
}
},
{
"servlet-name": "cofaxEmail",
"servlet-class": "org.cofax.cds.EmailServlet",
"init-param": {
"mailHost": "mail1",
"mailHostOverride": "mail2"
}
},
{
"servlet-name": "cofaxAdmin",
"servlet-class": "org.cofax.cds.AdminServlet"
},
{
"servlet-name": "fileServlet",
"servlet-class": "org.cofax.cds.FileServlet"
},
{
"servlet-name": "cofaxTools",
"servlet-class": "org.cofax.cms.CofaxToolsServlet",
"init-param": {
"templatePath": "toolstemplates/",
"log": 1,
"logLocation": "/usr/local/tomcat/logs/CofaxTools.log",
"logMaxSize": "",
"dataLog": 1,
"dataLogLocation": "/usr/local/tomcat/logs/dataLog.log",
"dataLogMaxSize": "",
"removePageCache": "/content/admin/remove?cache=pages&id=",
"removeTemplateCache": "/content/admin/remove?cache=templates&id=",
"fileTransferFolder": "/usr/local/tomcat/webapps/content/fileTransferFolder",
"lookInContext": 1,
"adminGroupID": 4,
"betaServer": true
}
}],
"servlet-mapping": {
"cofaxCDS": "/",
"cofaxEmail": "/cofaxutil/aemail/*",
"cofaxAdmin": "/admin/*",
"fileServlet": "/static/*",
"cofaxTools": "/tools/*"
},
"taglib": {
"taglib-uri": "cofax.tld",
"taglib-location": "/WEB-INF/tlds/cofax.tld"
}
}
},
{
"menu": {
"header": "SVG Viewer",
"items": [
{ "id": "Open" },
{ "id": "OpenNew", "label": "Open New" },
null,
{ "id": "ZoomIn", "label": "Zoom In" },
{ "id": "ZoomOut", "label": "Zoom Out" },
{ "id": "OriginalView", "label": "Original View" },
null,
{ "id": "Quality" },
{ "id": "Pause" },
{ "id": "Mute" },
null,
{ "id": "Find", "label": "Find..." },
{ "id": "FindAgain", "label": "Find Again" },
{ "id": "Copy" },
{ "id": "CopyAgain", "label": "Copy Again" },
{ "id": "CopySVG", "label": "Copy SVG" },
{ "id": "ViewSVG", "label": "View SVG" },
{ "id": "ViewSource", "label": "View Source" },
{ "id": "SaveAs", "label": "Save As" },
null,
{ "id": "Help" },
{ "id": "About", "label": "About Adobe CVG Viewer..." }
]
}
},
{
"empty": {
"object": {},
"array": []
}
},
{
"really_long": "Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nulla posuere, orci quis laoreet luctus, nunc neque condimentum arcu, sed tristique sem erat non libero. Morbi et velit non justo rutrum pulvinar. Nam pellentesque laoreet lacus eget sollicitudin. Quisque maximus mattis nisl, eget tempor nisi pulvinar et. Nullam accumsan sapien sapien, non gravida turpis consectetur non. Etiam in vestibulum neque. Donec porta dui sit amet turpis efficitur laoreet. Duis eu convallis ex, vel volutpat lacus. Donec sit amet nunc a orci fermentum luctus."
}
]));
</script>
</html>
它适用于 Laravel，Codeigniter Html：
<pre class="jsonPre"> </pre>
控制器：从控制器返回 JSON 值，就像
return json_encode($data, JSON_PRETTY_PRINT);
在脚本中：
<script> $('.jsonPre').html(result); </script>
结果将是
