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Asked: 2026-05-15T22:25:38+00:00

I want to do something like Object.prototype.dataTransfer = new DataTransfer(); , but I want

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I want to do something like Object.prototype.dataTransfer = new DataTransfer();, but I want every new object to have it’s own dataTransfer. How do I do this?

For example, if I do

var a = new Object();
var b = new Object();
Object.prototype.dataTransfer = new Object();
a.dataTransfer.prop = 1;
b.dataTransfer.prop = 2;

I want a.dataTransfer.prop to still be 1, not 2.

For context, I’m trying to hack WebKit and IE so that the .dataTransfer object of the drag and drop events works appropriately.

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1 Answer

  1. Editorial Team

    Normally you’d add it in the constructor, but since you’re wanting to extend a host object (HTMLDomElement), what you want isn’t really possible. However, if you broaden the definition of your problem beyond specific implementation details like this, there may be another way,
    such as a library with a different (possible) user facing API that works differently depending on which browser it is in, successfully abstracting the browser and supplying a uniform API.

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