標籤：cti length normal pac console white var ++ for
<html> <body> <script>function createFunctions(){ var result = new Array(); for (var i=0; i < 10; i++){ result[i] = function(){ return i; }; } return result;}var funcs = createFunctions();for (var i=0; i < funcs.length; i++){ console.log(funcs[i]());}funcs = ‘‘;var funcs = createFunctions();for (var i=0; i < funcs.length; i++){ console.log(funcs[i]());} </script> </body></html>執行到funcs=‘‘之前,匿名函數裡的i都是10,執行funcs=‘‘後,匿名函數的引用被刪除,不再被引用記憶體就會被回收,那麼匿名函數裡的i就被初始化了20170714_js閉包變數重設
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