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这在Chrome/Firefox中工作得很好,但在IE 9中失败。我怎样才能正确地做到这一点?如何创建嵌套的JavaScript对象
var Wrapper = function()
{
this.loc = {};
this.loc.default = {}; // fails here in IE
this.loc.default.lat = 30;
this.loc.default.lon = -120;
};