如何在 JavaScript 中创建 JSON 字符串？
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How to create JSON string in JavaScript?
提问by indianwebdevil
window.onload = function(){
var obj = '{
"name" : "Raj",
"age" : 32,
"married" : false
}';
var val = eval('(' + obj + ')');
alert( "name : " + val.name + "\n" +
"age : " + val.age + "\n" +
"married : " + val.married );
}
In a code something like this, I am trying to create JSON string just to play around. It's throwing error, but if I put all the name, age, married in one single line (line 2) it doesn't. Whats the problem?
在这样的代码中，我试图创建 JSON 字符串只是为了玩。这是抛出错误，但如果我将所有姓名、年龄、已婚都放在一行（第 2 行）中，则不会。有什么问题？
采纳答案by bardiir
Javascript doesn't handle Strings over multiple lines.
Javascript 不处理多行的字符串。
You will need to concatenate those:
您将需要连接这些：
var obj = '{'
+'"name" : "Raj",'
+'"age" : 32,'
+'"married" : false'
+'}';
You can also use template literals in ES6 and above: (See here for the documentation)
您还可以在 ES6 及更高版本中使用模板文字：（有关文档，请参见此处）
var obj = `{
"name" : "Raj",
"age" : 32,
"married" : false,
}`;
回答by Akhil Sekharan
The way i do it is:
我这样做的方式是：
var obj = new Object();
obj.name = "Raj";
obj.age = 32;
obj.married = false;
var jsonString= JSON.stringify(obj);
I guess this way can reduce chances for errors.
我想这种方式可以减少出错的机会。
回答by Didier Ghys
The function JSON.stringify will turn your json object into a string:
函数 JSON.stringify 会将您的 json 对象转换为字符串：
var jsonAsString = JSON.stringify(obj);
In case the browser does not implement it (IE6/IE7), use the JSON2.jsscript. It's safe as it uses the native implementation if it exists.
如果浏览器没有实现它（IE6/IE7），请使用JSON2.js脚本。它是安全的，因为它使用本机实现（如果存在）。
回答by Hidden
This can be pretty easy and simple
这可能非常容易和简单
var obj = new Object();
obj.name = "Raj";
obj.age = 32;
obj.married = false;
//convert object to json string
var string = JSON.stringify(obj);
//convert string to Json Object
console.log(JSON.parse(string)); // this is your requirement.
回答by TimWolla
Use JSON.stringify:
使用JSON.stringify：
> JSON.stringify({ asd: 'bla' });
'{"asd":"bla"}'
回答by SULFIKAR A N
I think this way helps you...
我认为这种方式可以帮助您...
var name=[];
var age=[];
name.push('sulfikar');
age.push('24');
var ent={};
for(var i=0;i<name.length;i++)
{
ent.name=name[i];
ent.age=age[i];
}
JSON.Stringify(ent);
回答by powtac
There is a "official" JSON implementation http://www.json.org/js.htmlby Crockford: https://github.com/douglascrockford/JSON-js
有一个“官方” JSON实施http://www.json.org/js.html由克罗克福德：https://github.com/douglascrockford/JSON-js
回答by Marc B
json strings can't have line breaks in them. You'd have to make it all one line: {"key":"val","key2":"val2",etc....}.
json 字符串中不能有换行符。你必须把它全部写成一行：{"key":"val","key2":"val2",etc....}.
But don't generate JSON strings yourself. There's plenty of libraries that do it for you, the biggest of which is jquery.
但不要自己生成 JSON 字符串。有很多库可以为您做这件事，其中最大的是jquery。
