将循环结构转换为JSON

Question

我有两种对象，Beam和Sample。 Sample包含2个Beams，我有一个Samples数组。 我需要将数组存储到本地存储中，所以我要调用localStorage["samples"] = JSON.stringify(samples); 但出现错误“将循环结构转换为JSON”。 我的对象不包含自身。 我还尝试了仅用1个beam对象替换samples对象，但是得到了相同的错误，并且Beam中只有整数和字符串值。

编辑

这里是对象。

    function FlexuralStrengthT97(result, method, beam1, beam2, waitForCuring, averageBeams) {
        this.Result = result;
        this.Method = method;
        this.Beam1 = beam1;
        this.Beam2 = beam2;
        this.WaitForCuring = waitForCuring;
        this.AverageOfBeams = averageBeams;

        return this;
    }


    function FSBeam(testingMachineId, beamAge, widthU, widthC, widthL, widthAverage, depthR, depthC, depthL, depthAverage, maxLoad, fs, psi, breakOutside) {
        this.TestingMachineId = testingMachineId;
        this.BeamAge = beamAge;
        this.WidthUpper = widthU;
        this.WidthCenter = widthC;
        this.WidthLower = widthL;
        this.WidthAverage = widthAverage;
        this.DepthRight = depthR;
        this.DepthCenter = depthC;
        this.DepthLeft = depthL;
        this.DepthAverage = depthAverage;
        this.MaxLoad = maxLoad;
        this.FS = fs;
        this.PSI = psi;
        this.BreakOutside = breakOutside;

        return this;
    }

Answer 1

这些似乎是构造函数，请确保将它们与new关键字一起使用：

var beam1 = new FSBeam();
var flex = new FlexuralStrengthT97();

否则， this将是window ，而不是实例范围。