如何使用 instanceof 运算符检查 props 数据中的参数类型?
how to use the instanceof operator to check parameter type in props data?
在 vue 指南文档中,我查看了有关 prop validation 的文档:
The type can be one of the following native constructors:
String
Number
Boolean
Function
Object
Array
In addition, type can also be a custom constructor function and the assertion will be made with an instanceof check.
那么,如何使用instanceof操作符实现参数自定义类型检查呢?
您可以使用自定义类型,例如:
props: {
file: { type: File, required: true }
}
在 vue 指南文档中,我查看了有关 prop validation 的文档:
The type can be one of the following native constructors:
String
Number
Boolean
Function
Object
Array
In addition, type can also be a custom constructor function and the assertion will be made with an instanceof check.
那么,如何使用instanceof操作符实现参数自定义类型检查呢?
您可以使用自定义类型,例如:
props: {
file: { type: File, required: true }
}