運算子, 敘述, 範例. +, 加號, 1 + 1 = 2. –, 減號, 2 – 1 = 1. *, 乘號, 2 * 3 = 6. /, 除號, 10 / 2 = 5. —, 減去, var a = 10; a–; Now a =9. %, 餘數, 20 % 3 = 2.
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