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我有一个列表,我只是想过滤。 Array.find和filter都会产生错误。Array.Filter和找不到错误角度4
功能:
setSupplierDetails(supplierId) {
const supplier = this.suppliers.filter(tempSupplier => tempSupplier.id === supplierId)[0];
this.supplierName = supplier.supplierName;
} 错误:
ERROR TypeError: Cannot read property 'filter' of undefined
at AddEditRestockComponent.webpackJsonp.../../../../../src/app/restock/add-edit-restock/add-edit-restock.component.ts.AddEditRestockComponent.setProductRelatedInfo
显然,'this.suppliers'没有被定义。确保它不仅被声明,而且被初始化(例如'suppliers:SomeClass [] = [];')。 – ConnorsFan
发布'this.suppliers' –
我找到了答案。我通过setSupplierDetails(supplierId)将supplierId作为一个我意识到导致问题的数字。 setSupplierDetails(supplierId){供应商= this.suppliers.filter(tempSupplier => tempSupplier.id === + supplierId)[0]; this.supplierName = supplier.supplierName; – user3701188