如何向Javascript数组中添加JSON对象数组

Question

我有一个希望以编程方式创建的JSON对象数组。所需的输出数组如下

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当前代码如下

var arrData = [];
  arrData[0] = '{\"GeneralInformation\": [{\"BusinessSummary\": \"Apple Inc. designs, manufactures and markets mobile communication and media devices, personal computers and portable digital music players and sells a variety of related software, services, peripherals, networking solutions and third-party digital content and applications. The Company\'s; products and services include iPhone, iPad, Mac, iPod, Apple TV, a portfolio of consumer and professional software applications, the iOS and OS X operating systems, iCloud and a variety of accessory, service and support offerings. The Company offers a range of mobile communication and media devices, personal computing products and portable digital music players, as well as a variety of related software, services, peripherals, networking solutions and third-party hardware and software products. The Company\'s primary products include iPhone, iPad, Mac, iPod, iTunes, Mac App Store, iCloud, Operating System Software, Application Software and Other Application Software.\"},{\"Websites\": [{\"Homepage\": \"http:www.apple.com\"}]}]}';

  console.log(arrData[0]);

从上面的代码中，我得到了如下输出

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正如我们所看到的，输出都是文本。如何输出JSON对象的数组，如上面列出的代码中的第一个图像所示。

Answer 1

正如您所告诉的，您有一个JSON字符串数组。通过将JSON.parse函数应用于每个项，您可以简单地将其转换为对象数组。

使用Array.prototype.map函数可以很容易地完成：

// generates a new array by applying JSON.parse to every item
arrData = arrData.map(JSON.parse); 

// just for better understanding. "map" is almost the same as:
for (var i = 0; i < arrData.length; i++)
{
    arrData[i] = JSON.parse(arrData[i]);
}

之后，arrData将成为JavaScript对象的数组。

工作演示：

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var arrData = [];
arrData[0] = '{\"GeneralInformation\": [{\"BusinessSummary\": \"Apple Inc. designs, manufactures and markets mobile communication and media devices, personal computers and portable digital music players and sells a variety of related software, services, peripherals, networking solutions and third-party digital content and applications. The Company\'s; products and services include iPhone, iPad, Mac, iPod, Apple TV, a portfolio of consumer and professional software applications, the iOS and OS X operating systems, iCloud and a variety of accessory, service and support offerings. The Company offers a range of mobile communication and media devices, personal computing products and portable digital music players, as well as a variety of related software, services, peripherals, networking solutions and third-party hardware and software products. The Company\'s primary products include iPhone, iPad, Mac, iPod, iTunes, Mac App Store, iCloud, Operating System Software, Application Software and Other Application Software.\"},{\"Websites\": [{\"Homepage\": \"http:www.apple.com\"}]}]}';
arrData[1] = '{\"GeneralInformation\": [{\"BusinessSummary\": \"Apple Inc. designs, manufactures and markets mobile communication and media devices, personal computers and portable digital music players and sells a variety of related software, services, peripherals, networking solutions and third-party digital content and applications. The Company\'s; products and services include iPhone, iPad, Mac, iPod, Apple TV, a portfolio of consumer and professional software applications, the iOS and OS X operating systems, iCloud and a variety of accessory, service and support offerings. The Company offers a range of mobile communication and media devices, personal computing products and portable digital music players, as well as a variety of related software, services, peripherals, networking solutions and third-party hardware and software products. The Company\'s primary products include iPhone, iPad, Mac, iPod, iTunes, Mac App Store, iCloud, Operating System Software, Application Software and Other Application Software.\"},{\"Websites\": [{\"Homepage\": \"http:www.apple.com\"}]}]}';

arrData = arrData.map(JSON.parse);
console.log(arrData);

<div style="color: white;">Wake up Neo...</div>Look at the console

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Answer 2

使用JSON.parse方法将JSON字符串解析为JavaScript对象。

console.log(JSON.parse(arrData[0]));

Answer 3

JSON.parse()将JSON格式的字符串转换为JavaScript对象。由于arrData[0]是一个字符串，为了访问它的参数，您需要使用JSON.parse()

console.log(JSON.parse(arrData[0]));