单选题varx=“Iamglobalx”；vary=“Iamglobaly”；functionfoo（）{vary=x=“Hellofromfoo”；}foo（）；执行上面的代码后，x、y的值分别是多少（）。A抛出SyntaxError错误Bx=Hellofromfoo；y=IamglobalyCx=Iamglobalx；y=IamglobalyDx=Hellofromfoo；y=Hellofromfoo
单选题
varx=“Iamglobalx”；vary=“Iamglobaly”；functionfoo（）{vary=x=“Hellofromfoo”；}foo（）；执行上面的代码后，x、y的值分别是多少（）。
A
抛出SyntaxError错误
B
x=Hellofromfoo；y=Iamglobaly
C
x=Iamglobalx；y=Iamglobaly
D
x=Hellofromfoo；y=Hellofromfoo
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