<script> var a = {n:1}; var b = a; a.x = a = {n:2}; console.log(a.x);// --> undefined console.log(b.x);// --> [object Object] </script>
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<script> var a = {n:1}; var b = a; a.x = a = {n:2}; console.log(a.x);// --> undefined console.log(b.x);// --> [object Object] </script>
更多内容请查看
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