JS 개체에서 값을 가져 오는 방법은 무엇입니까?

Question

갑자기 작동을 멈춘 스크립트의 예제를 제공합니다. 문제는 과거에는 문제가 없었지만이 객체에서 어떤 값도 얻을 수 없다는 것입니다.

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
    points = JSON.parse(points); 
    console.log(points); // Here is my full object, i can navigate it and also copy full path 
    console.log(points.point[0]); // produces TypeError: points.point is undefined 

Answer 1

isnt points.points.point[0]? 첫 번째 '포인트'는 콘텐츠가 아니라 변수입니다. 또 다른 변수 varName와

이 좀 더 명확 수 있습니다 : points으로

pointsJSON = JSON.parse(pointsJSON); 
pointsJSON.points.point[0] 

Answer 2

은 개체 이름이고 당신이

points.points.point[0] 

를 얻을 수 있도록 같은 이름으로 객체의 속성을 가지고있다 첫 번째 점은 변수 이름이고, 두 번째 점은 객체의 첫 번째 속성이고 세 번째 점은 내부 속성입니다.