什么是 JSON.stringify(),请解释其在 javascript 中的用法?
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JSON.stringify()
如果我们需要将数据发送到 Web 服务器,则数据应为字符串。要将对象文字更改为字符串,应使用 JSON.stringify() 方法。例如
示例 1
<html> <body> <p id="demo"></p> <script> var obj = {name:"rekha", age:40, city:"newyork"}; var myJSON = JSON.stringify(obj); document.getElementById("demo").innerHTML = myJSON; </script> </body> </html>
输出
{"name":"rekha","age":40,"city":"newyork"}
示例 2
<html> <body> <p id="demo"></p> <script> var obj = {"name":"ramesh","age":30,"family": [{"mother":"geetha","father":"rao"}],"city":"berlin"}; var myJSON = JSON.stringify(obj); document.getElementById("demo").innerHTML = myJSON; </script> </body> </html>
输出
{"name":"ramesh","age":30,"family":[{"mother":"geetha","father":"rao"}],"city":"berlin"}