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<title>Document</title>
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<script>
//# 闭包
//1.闭包会造成内存不会被释放
//2.闭包使得函数外部可以访问内部的变量
function b(){
var a = 1;
function getA(){
console.log(a++);
}
return getA;
}
var AA = b(); // 返回值getA函数
AA(); // 1
AA(); // 2
AA(); // 3
</script>
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