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                JavaScript 執行上下文 JavaScript執行為順序執行 >可執行代碼 全局代碼 函數代碼 eval代碼 執行上下文 ~~~ function fun3() { console.log('fun3') } function fun2() { fun3(); } function fun1() { fun2(); } fun1(); ~~~ 當執行一個函數的時候,就會創建一個執行上下文,并且壓入執行上下文棧,當函數執行完畢的時候,就會將函數的執行上下文從棧中彈出
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