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多项选择题改变class不为demo的div元素的背景色,以下哪些写法是错误的?()

A、$("div.demo").css("background","blue")

B、$("div:not(.demo)").css({"background":"blue"})

C、$("div:not(.demo)").css({"background","blue"})

D、$("div:not(.demo)").css("background","blue")

  • A,C
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