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老师 ,我想用vuex来储存defaultFontSize值从而改变字体大小,可以在store,js中手动更新字体大小。点击却没反应

ebook.vue

https://img1.sycdn.imooc.com//5cde84670001d7c209290334.jpg


https://img1.sycdn.imooc.com//5cde84340001e26110730825.jpg

https://img1.sycdn.imooc.com//5cde84340001ae9a11460801.jpg

https://img1.sycdn.imooc.com//5cde84340001c2ad07630472.jpg

MenuBar.vue

https://img1.sycdn.imooc.com//5cde82f20001b3ae10480789.jpg

https://img1.sycdn.imooc.com//5cde82f30001682d09320795.jpg

store.js

https://img1.sycdn.imooc.com//5cde831700014a1009510673.jpg


报错

https://img1.sycdn.imooc.com//5cde851e00017d3109480380.jpg

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老师 ,我想用vuex来储存defaultFontSize值从而改变字体大小,可以在store,js中手动更新字体大小。点击却没反应

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