[英]how is this evaluated for a function executed as callback?
當我通過setTimeout執行myCallback時。 如何在myCallback內部this
求值?
setTimeout(myCallback, 1000);
// is 'this' inside myCallback going to be the same as
// if I invoked myCallback directly like this: myCallback() ?
myCallback函數將在新作用域中調用,因此當前對象中的“ this”將不再可用,而“ this”將引用全局“ window”對象
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