Javascript对象作为参数处理(Javascript Object as Parameter Handling)

Javascript对象作为参数处理(Javascript Object as Parameter Handling)

我有2个Javascript对象，Limits和Wind，并且试图在一个对象上调用该函数，该对象是另一个对象的参数。 永远不会调用警报，控制台中没有错误。 我这样做了吗？

var Limits = { minx: 0, miny: 0, SetMaxLimits: function (x1, x2, y1, y2, zoom) { alert('j'); } }; var Wind = { Data : Limits, Screen : Limits, Rotation: 0, CanvasW : 0, CanvasH : 0, North : true, _Math : true, NormalLimits: function (x,y) { Data.SetMaxlimits(0, 0, 0, 0, 0); } }; Wind.NormalLimits(0,0);

I have 2 Javascript objects, Limits and Wind, and are trying to call the function on the one object that is a parameter of the other object. The alert is never called and there's no errors in the console. Am I doing this right?

var Limits = { minx: 0, miny: 0, SetMaxLimits: function (x1, x2, y1, y2, zoom) { alert('j'); } }; var Wind = { Data : Limits, Screen : Limits, Rotation: 0, CanvasW : 0, CanvasH : 0, North : true, _Math : true, NormalLimits: function (x,y) { Data.SetMaxlimits(0, 0, 0, 0, 0); } }; Wind.NormalLimits(0,0);

最满意答案

你有一个拼写错误，它是SetMaxLimits ，而不是SetMaxlimits ，你必须引用Data方法属性的对象，在这种情况下可以用this来完成，具体取决于函数的调用方式。

var Limits = { minx: 0, miny: 0, SetMaxLimits: function (x1, x2, y1, y2, zoom) { alert('j'); } }; var Wind = { Data : Limits, Screen : Limits, Rotation: 0, CanvasW : 0, CanvasH : 0, North : true, _Math : true, NormalLimits: function () { this.Data.SetMaxLimits(0, 0, 0, 0, 0); } }; Wind.NormalLimits();

小提琴

You have a typo, it's SetMaxLimits, not SetMaxlimits, and you have to reference the object that the Data method is a property of, which in this case could probably be done with this, depending on how the function is called.

var Limits = { minx: 0, miny: 0, SetMaxLimits: function (x1, x2, y1, y2, zoom) { alert('j'); } }; var Wind = { Data : Limits, Screen : Limits, Rotation: 0, CanvasW : 0, CanvasH : 0, North : true, _Math : true, NormalLimits: function () { this.Data.SetMaxLimits(0, 0, 0, 0, 0); } }; Wind.NormalLimits();

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