How to convert JavaScript object to json format
JavaScript中要将对象转换为JSON格式字符串，我们需要使用JSON.stringify（）方法，下面我们来看具体的内容。
JSON.stringify（）语法格式：
JSON.stringify（[要转换的对象]）
或
JSON.stringify（[要转换的对象]，[转换函数]）
JSON.stringify（[要转换的对象]，[转换函数]，[空白处理方法]）
一个具体实例
代码如下：
创建以下HTML文件
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<script type="text/javascript">
var obj = {
name: "饼干",
code: "PC-001",
price: 360,
getInfo: function () {
return this.name + " = \\" + this.price;
}
}
function ObjectToJson() {
var jsontext = JSON.stringify(obj);
var elem = document.getElementById("textarea1");
elem.innerText = jsontext;
}
</script>
</head>
<body>
<div></div>
<div><textarea id="textarea1" cols=80 rows=20 wrap="off"></textarea></div>
</body>
</html>说明：
使用以下代码定义对象。
var obj = {
name: "饼干",
code: "PC-001",
price: 360,
getInfo: function () {
return this.name + " = \\" + this.price;
}
}单击该按钮时，将调用以下ObjectToJson（）函数。调用JSON.stringify（）方法将对象转换为JSON字符串。将要转换的对象作为第一个参数。
转换后的结果将作为JSON.stringify（）的返回值返回。在此代码中，结果JSON格式字符串显示在文本区域中。
function ObjectToJson() {
var jsontext = JSON.stringify(obj);
var elem = document.getElementById("textarea1");
elem.innerText = jsontext;
}执行结果：
使用Web浏览器显示上述HTML文件。将显示如下所示的效果：
单击“button”按钮。JavaScript对象的信息转换为JSON字符串，并在文本区域中显示为文本字符串。
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