binnng/gist:5449490

Created April 24, 2013 03:53

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属性是可以通过delete操作符删除的，而变量是不能的。

Raw

gistfile1.js

	var c = 1;
	delete c; //false

	d = 1;
	delete d; //true

	window.e = 1;
	delete e; //true

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