我如何以易于阅读(供人类阅读)的格式显示JSON?我主要寻找缩进和空白,甚至是颜色/字体样式等。
当前回答
我想在这里展示我的jsonAnalyze方法,它只打印了JSON结构,但在某些情况下,打印整个JSON会更有用。
假设您有这样一个复杂的JSON:
let theJson = {
'username': 'elen',
'email': 'elen@test.com',
'state': 'married',
'profiles': [
{'name': 'elenLove', 'job': 'actor' },
{'name': 'elenDoe', 'job': 'spy'}
],
'hobbies': ['run', 'movies'],
'status': {
'home': {
'ownsHome': true,
'addresses': [
{'town': 'Mexico', 'address': '123 mexicoStr'},
{'town': 'Atlanta', 'address': '4B atlanta 45-48'},
]
},
'car': {
'ownsCar': true,
'cars': [
{'brand': 'Nissan', 'plate': 'TOKY-114', 'prevOwnersIDs': ['4532354531', '3454655344', '5566753422']},
{'brand': 'Benz', 'plate': 'ELEN-1225', 'prevOwnersIDs': ['4531124531', '97864655344', '887666753422']}
]
}
},
'active': true,
'employed': false,
};
然后该方法将返回如下结构:
username
email
state
profiles[]
profiles[].name
profiles[].job
hobbies[]
status{}
status{}.home{}
status{}.home{}.ownsHome
status{}.home{}.addresses[]
status{}.home{}.addresses[].town
status{}.home{}.addresses[].address
status{}.car{}
status{}.car{}.ownsCar
status{}.car{}.cars[]
status{}.car{}.cars[].brand
status{}.car{}.cars[].plate
status{}.car{}.cars[].prevOwnersIDs[]
active
employed
这是jsonAnalysis()代码:
function jsonAnalyze(obj) {
let arr = [];
analyzeJson(obj, null, arr);
return logBeautifiedDotNotation(arr);
function analyzeJson(obj, parentStr, outArr) {
let opt;
if (!outArr) {
return "no output array given"
}
for (let prop in obj) {
opt = parentStr ? parentStr + '.' + prop : prop;
if (Array.isArray(obj[prop]) && obj[prop] !== null) {
let arr = obj[prop];
if ((Array.isArray(arr[0]) || typeof arr[0] == "object") && arr[0] != null) {
outArr.push(opt + '[]');
analyzeJson(arr[0], opt + '[]', outArr);
} else {
outArr.push(opt + '[]');
}
} else if (typeof obj[prop] == "object" && obj[prop] !== null) {
outArr.push(opt + '{}');
analyzeJson(obj[prop], opt + '{}', outArr);
} else {
if (obj.hasOwnProperty(prop) && typeof obj[prop] != 'function') {
outArr.push(opt);
}
}
}
}
function logBeautifiedDotNotation(arr) {
retStr = '';
arr.map(function (item) {
let dotsAmount = item.split(".").length - 1;
let dotsString = Array(dotsAmount + 1).join(' ');
retStr += dotsString + item + '\n';
console.log(dotsString + item)
});
return retStr;
}
}
jsonAnalyze(theJson);
其他回答
我想在这里展示我的jsonAnalyze方法,它只打印了JSON结构,但在某些情况下,打印整个JSON会更有用。
假设您有这样一个复杂的JSON:
let theJson = {
'username': 'elen',
'email': 'elen@test.com',
'state': 'married',
'profiles': [
{'name': 'elenLove', 'job': 'actor' },
{'name': 'elenDoe', 'job': 'spy'}
],
'hobbies': ['run', 'movies'],
'status': {
'home': {
'ownsHome': true,
'addresses': [
{'town': 'Mexico', 'address': '123 mexicoStr'},
{'town': 'Atlanta', 'address': '4B atlanta 45-48'},
]
},
'car': {
'ownsCar': true,
'cars': [
{'brand': 'Nissan', 'plate': 'TOKY-114', 'prevOwnersIDs': ['4532354531', '3454655344', '5566753422']},
{'brand': 'Benz', 'plate': 'ELEN-1225', 'prevOwnersIDs': ['4531124531', '97864655344', '887666753422']}
]
}
},
'active': true,
'employed': false,
};
然后该方法将返回如下结构:
username
email
state
profiles[]
profiles[].name
profiles[].job
hobbies[]
status{}
status{}.home{}
status{}.home{}.ownsHome
status{}.home{}.addresses[]
status{}.home{}.addresses[].town
status{}.home{}.addresses[].address
status{}.car{}
status{}.car{}.ownsCar
status{}.car{}.cars[]
status{}.car{}.cars[].brand
status{}.car{}.cars[].plate
status{}.car{}.cars[].prevOwnersIDs[]
active
employed
这是jsonAnalysis()代码:
function jsonAnalyze(obj) {
let arr = [];
analyzeJson(obj, null, arr);
return logBeautifiedDotNotation(arr);
function analyzeJson(obj, parentStr, outArr) {
let opt;
if (!outArr) {
return "no output array given"
}
for (let prop in obj) {
opt = parentStr ? parentStr + '.' + prop : prop;
if (Array.isArray(obj[prop]) && obj[prop] !== null) {
let arr = obj[prop];
if ((Array.isArray(arr[0]) || typeof arr[0] == "object") && arr[0] != null) {
outArr.push(opt + '[]');
analyzeJson(arr[0], opt + '[]', outArr);
} else {
outArr.push(opt + '[]');
}
} else if (typeof obj[prop] == "object" && obj[prop] !== null) {
outArr.push(opt + '{}');
analyzeJson(obj[prop], opt + '{}', outArr);
} else {
if (obj.hasOwnProperty(prop) && typeof obj[prop] != 'function') {
outArr.push(opt);
}
}
}
}
function logBeautifiedDotNotation(arr) {
retStr = '';
arr.map(function (item) {
let dotsAmount = item.split(".").length - 1;
let dotsString = Array(dotsAmount + 1).join(' ');
retStr += dotsString + item + '\n';
console.log(dotsString + item)
});
return retStr;
}
}
jsonAnalyze(theJson);
漂亮的打印是在JSON.stringify()中本地实现的。第三个参数启用漂亮的打印并设置要使用的间距:
var str = JSON.stringify(obj, null, 2); // spacing level = 2
如果您需要语法高亮显示,可以使用一些正则表达式魔法,例如:
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 (/:$/.test(match)) {
cls = 'key';
} else {
cls = 'string';
}
} else if (/true|false/.test(match)) {
cls = 'boolean';
} else if (/null/.test(match)) {
cls = 'null';
}
return '<span class="' + cls + '">' + match + '</span>';
});
}
在这里查看实际操作:jsfiddle
或以下提供的完整片段:
函数输出(inp){document.body.appendChild(document.createElement('pre')).innerHTML=inp;}函数syntaxHighlight(json){json=json.replace(/&/g,'&;').replace(//g,'<;')/replace(/>/g,'>;');return json.replace(/(“(\\u[a-zA-Z0-9]{4}| \\[^u]|[^\\“])*”(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g,函数(匹配){var cls=“数字”;if(/^“/.test(匹配)){if(/:$/.test(匹配)){cls=“键”;}其他{cls=“字符串”;}}else if(/true|false/.test(匹配)){cls=“布尔值”;}else if(/null/.test(match)){cls=“null”;}return'<span class=“'+cls+'”>'+match+'</span>';});}var obj={a:1,'b':'o',c:[false,'false',null,'null',{d:{e:1.3e5,f:'1.3e5'}}]};var str=JSON.stringify(obj,未定义,4);输出(str);输出(syntaxHighlight(str));前置{outline:1px实心#ccc;padding:5px;margin:5px;}.string{color:绿色;}.number{color:深橙色;}布尔{color:blue;}.null{color:洋红色;}.key{color:红色;}
如果您需要在文本区域中使用此选项,则接受的解决方案将不起作用。
<textarea id='textarea'></textarea>
$(“#textarea”).append(格式JSON(JSON.stringify(jsonobject),true));
function formatJSON(json,textarea) {
var nl;
if(textarea) {
nl = " ";
} else {
nl = "<br>";
}
var tab = "    ";
var ret = "";
var numquotes = 0;
var betweenquotes = false;
var firstquote = false;
for (var i = 0; i < json.length; i++) {
var c = json[i];
if(c == '"') {
numquotes ++;
if((numquotes + 2) % 2 == 1) {
betweenquotes = true;
} else {
betweenquotes = false;
}
if((numquotes + 3) % 4 == 0) {
firstquote = true;
} else {
firstquote = false;
}
}
if(c == '[' && !betweenquotes) {
ret += c;
ret += nl;
continue;
}
if(c == '{' && !betweenquotes) {
ret += tab;
ret += c;
ret += nl;
continue;
}
if(c == '"' && firstquote) {
ret += tab + tab;
ret += c;
continue;
} else if (c == '"' && !firstquote) {
ret += c;
continue;
}
if(c == ',' && !betweenquotes) {
ret += c;
ret += nl;
continue;
}
if(c == '}' && !betweenquotes) {
ret += nl;
ret += tab;
ret += c;
continue;
}
if(c == ']' && !betweenquotes) {
ret += nl;
ret += c;
continue;
}
ret += c;
} // i loop
return ret;
}
这是给Laravel的,CodeigniterHtml:<pre class=“jsonPre”></pre>
Controller:从控制器返回JSON值,如下所示
返回json_encode($data,json_PRETTY_PRINT);
在脚本中:<script>$('.jsonPre').html(结果)</脚本>
结果将是
要使用Bootstrap在HTML中突出显示和美化它,请执行以下操作:
function prettifyJson(json, prettify) {
if (typeof json !== 'string') {
if (prettify) {
json = JSON.stringify(json, undefined, 4);
} else {
json = JSON.stringify(json);
}
}
return json.replace(/("(\\u[a-zA-Z0-9]{4}|\\[^u]|[^\\"])*"(\s*:)?|\b(true|false|null)\b|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?)/g,
function(match) {
let cls = "<span>";
if (/^"/.test(match)) {
if (/:$/.test(match)) {
cls = "<span class='text-danger'>";
} else {
cls = "<span>";
}
} else if (/true|false/.test(match)) {
cls = "<span class='text-primary'>";
} else if (/null/.test(match)) {
cls = "<span class='text-info'>";
}
return cls + match + "</span>";
}
);
}