我JSON。Stringify一个json对象
result = JSON.stringify(message, my_json, 2)
上面参数中的2应该是漂亮的输出结果。如果我执行alert(result)之类的操作，它就会这样做。但是，我想通过在div中追加它来将其输出给用户。当我这样做时，我只会显示一行。(我不认为这是工作，因为断点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 }
是否有一种输出JSON结果的方法。Stringify到一个div在一个漂亮的打印方式?
当前回答
用预标签包装
<pre> { JSON.stringify(todos, null, 4)}</pre>
输出将是
[
{
"id": "6cbc8fc4-a89e-4afa-abc1-f72f27b14271",
"title": "shakil",
"completed": false
},
{
"id": "5ee68df8-e152-46ae-82e2-8eb49f477d6f",
"title": "kobir",
"completed": false
}
]
其他回答
很多人会对这些问题做出非常奇怪的回答，这就造成了不必要的工作量。
做到这一点最简单的方法包括以下内容
使用JSON. Parse (value)解析JSON字符串 - JSON.stringify(input,undefined,2) 将输出设置为步骤2的值。
在实际代码中，一个例子是(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);
输出。value将是你想要显示美化的JSON的区域。
使用样式空白:pre <pre>标记还修改可能不希望的文本格式。
完全披露我是这个包的作者，但另一种以可读的方式输出JSON或JavaScript对象的方法是nodedump, https://github.com/ragamufin/nodedump
对于那些想要显示可折叠json的人，可以使用renderjson
下面是通过在html中嵌入渲染js javascript的例子
<!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>
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>
);
}
stringify
