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vue中子组件使用this.$emit给父组件传值无效

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vue中子组件使用this.$emit给父组件传值无效

这是子组件请求, 完成后把数量发给父组件
image.png
这是父组件中的子组件部分
image.png
然后是父组件对应的方法
image.png
结果就是走不到父组件这边来

这是抄的另一个地方的代码:
子组件
image.png
父组件
image.png
父组件方法
image.png

这边这个却是正常的


与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
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1 Answer

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by (71.8m points)

换个姿势: 使用vuex，把数据同步到store，然后在父组件下computed获取这个长度


与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
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