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let a = 2;
let x = 1 + (a *= 2);
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ä¸é¢è¿æ®µä»£ç è¿è¡å®æåï¼ä»£ç ä¸ç a å x ç弿¯å¤å°ï¼
let a = 2;
let x = 1 + (a *= 2);
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a = 4ï¼ä¹ä»¥ 2ï¼x = 5ï¼ç¸å½äºè®¡ç® 1 + 4ï¼