sre*_*moh 7 foreach typescript
我有记录Records类型:
export interface List {
name: string;
title: string;
}
export type RecordType
= 'recordOne'
| 'recordTwo'
| 'recordThree';
export const Records: Record<RecordType, List> = {
recordOne: {
name: 'Name1',
title: 'Ausi bere ut erit adeo enim an suae'
},
recordTwo: {
name: 'Name2',
title: 'Petebat proprie suo methodo'
},
recordThree: {
name: 'Name3',
title: 'Petebat proprie suo methodo inscitiae'
}
}
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我想搜索具有特定文本的记录,但为了做到这一点,我需要循环遍历,Records那么你会怎么做呢?我的意思是你会怎么想Records?
基本上这就是我想要的:
findMatchingTitle(myString) {
let title = '';
this.Records.foreach(x => {
if(myString.includes(x.title)) {
title = x.title;
}
});
return title;
}
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有任何想法吗?
小智 8
一般来说,要循环对象,您可以执行以下操作:
for(let prop in obj) console.log(obj[prop])
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然而,打字稿不会让你在没有隐式任何的情况下做到这一点,这就是为什么你必须输入强制转换:
for (let prop in Records) console.log((Records as any)[prop]);
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循环访问对象并比较属性的另一种方法是使用Object.keys和Object.values,如下所示
function findMatchingTitle(myString: string): string {
for (let index in Object.keys(Records)) {
let title: string = Object.values(Records)[index].name;
if (title.includes(myString))
return title;
}
return '';
}
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或者,对于精确搜索,它将是:
function findMatchingTitle(myString: string): string {
for (let index in Object.keys(Records)) {
let title: string = Object.values(Records)[index].name;
if (title === myString)
return title;
}
return '';
}
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