你必须知道的Javascript知识点之深入理解作用域链的介绍

示例代码: 代码如下:var xxxVar1 = 1; var outer = function(){ var xxxVar2 = 2; var results = []; for(var i = 0; i< 3; i++) { var inner = function(){ var xxxVar3 = 3; return xxxVar3 + xxxVar2 +xxxVar1 + i; } results .push(inner); } return results; } var