Question

以下API返回一些JSON数据：

https://en.wikipedia.org/w/api.php?format=json&action=query&generator=search&gsrnamespace=0&gsrlimit=10&prop=pageimages|extracts&pilimit=max&exintro&explaintext&exsentences=1&exlimit=max&gsrsearch=bananas

我正在尝试将Pages对象的属性（也是对象）推送到单个数组中。每个对象应该是数组中自己的元素。

例如，pop应该被推送到像Scanner input = new Scanner(System.in); double totalMiles = 0; double totalGallons = 0; int tripCounter = 0; Stack<String> trips = new Stack<>(); while (true){ System.out.print("Enter miles driven: "); //Want to say "Enter miles driven or 'q' to quit: " String milesInput = input.next(); if(milesInput.equalsIgnoreCase("q") || milesInput.equalsIgnoreCase("quit")){ if(trips.empty()) { System.out.println("no data entered"); break; } String[] previousRecord = trips.pop().split(" "); System.out.printf("%nYour number of trips is: %s%n", previousRecord[0]); System.out.printf("Your mileage per gallon of gas consumed is: %s%n%n", previousRecord[1]); break; } double milesDriven = Double.parseDouble(milesInput); // consider adding extra checks before converting totalMiles = totalMiles + milesDriven; System.out.print("Enter gallons of gas consumed: "); // Similar to the above. String gallonsInput = input.next(); if(gallonsInput.equalsIgnoreCase("q") || gallonsInput.equalsIgnoreCase("quit")){ if(trips.empty()) { System.out.println("no data entered"); break; } String[] previousRecord = trips.pop().split(" "); System.out.printf("%nYour number of trips is: %s%n", previousRecord[0]); System.out.printf("Your mileage per gallon of gas consumed is: %s%n%n", previousRecord[1]); break; } double gasConsumed = Double.parseDouble(gallonsInput); totalGallons = totalGallons + gasConsumed; tripCounter = tripCounter + 1; double milesPerGallon = totalMiles / totalGallons; trips.push(tripCounter + " " + milesPerGallon); System.out.printf("%nYour number of trips is: %s%n", tripCounter); System.out.printf("Your mileage per gallon of gas consumed is: %s%n%n", milesPerGallon); }

这样的数组中

我这样做是为了让我可以使用ForEach运行数组并使用所需的数据填充DOM。

提前致谢！

Answer 1

如果您有ES6，似乎只需要它：

var pages = Object.values(response.query.pages);

或者您可以使用此变体使其在旧版浏览器中运行：

var pages = Object.keys(response.query.pages).map(function (key) {
    return response.query.pages[key];
});

可以找到更详细的答案here。

Answer 2

// result is the json from https://en.wikipedia.org/w/api.php?format=json&action=query&generator=search&gsrnamespace=0&gsrlimit=10&prop=pageimages|extracts&pilimit=max&exintro&explaintext&exsentences=1&exlimit=max&gsrsearch=bananas

const singleArray = Object.keys(result.query.pages).reduce((acc, id) => {
  acc.push(result.query.pages[id]);
  return acc;
}, []);

如何将嵌套对象推入数组中的单个元素？

2 个答案: