å¦æpersonæ¯æå¼ç¨ä¼ éçï¼é£ä¹personå°±ä¼èªå¨è¢«ä¿®æ¹ä¸ºæåå ¶nameå±æ§å¼ä¸º"Greg"çæ°å¯¹è±¡ãä½æ¯ï¼å½æ¥ä¸æ¥å访é®person.nameæ¶ï¼æ¾ç¤ºçå¼ä»»ç¶æ¯"Nicholas"ãè¿è¯´æå³ä½¿å¨å½æ°å é¨ä¿®æ¹äºåæ°çå¼ï¼ä½åå§çå¼ç¨ä»»ç¶ä¿æä¸åãå®é ä¸ï¼å½å¨å½æ°å é¨éåobjæ¶ï¼è¿ä¸ªåéå¼ç¨çå°±æ¯ä¸ä¸ªå±é¨å¯¹è±¡äºãèè¿ä¸ªå±é¨å¯¹è±¡ä¼å¨å½æ°æ§è¡å®æ¯åç«å³è¢«éæ¯ã
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var person = new Object();var obj = person;
obj.name = "Nicholas";
obj = new Object();
obj.name = "Greg";
alert(person.name); // "Nicholas"
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function setName(obj) {
obj.name = "Nicholas";
obj = new Object();
obj.name = "Greg";
}var person = new Object();
setName(person);
alert(person.name); // "Nicholas"
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