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nodejs和浏览器环境中带不带var区别 - 僧少博客
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nodejs和浏览器环境中带不带var区别

nodejs中：带var表示当前模块的顶层作用域的属性，不带var表示global对象中的属性。


浏览器环境下：带var或者不带var都表示window对象的属性，没有什么区别，而windows对象又指向global对象。浏览器中global对象不能直接访问，window对象是global对象的具体化表现。



参考:nodejs和浏览器环境中带不带var区别 - keepnight

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