Avoid mutating a prop directly since the value will be overwritten whenever... - Code World

Avoid mutating a prop directly since the value will be overwritten whenever...

Others 2021-01-29 10:47:18 views: null

1. Problem: The parent component passes the value to the child component, and the child component uses the value passed by the parent component, and the following exception occurs

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2. Solution: The child component cannot directly use the value passed by the parent component. The passed value needs to be redefined, and then the redefined value can be used normally.

3. Specific operation: use watch to monitor the change of the value passed by the parent component, and then reassign the changed value to the new value defined in data, and the child component uses the new value to operate.

a. Define a new value in the data of the child component
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b. Monitor the change of the value passed by the parent component and re-assign it

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c. Sub-components use new variables to operate

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Origin blog.csdn.net/qq_43234632/article/details/111181894

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