如何通过javascript从数组中的主字符串中排除字符串部分

Question

我有一个字符串存在于数组中，如下所示

getid Array [
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",
]

，我想把这个部分E8R52y6dD8XI3shXhnhS9pVzUpe2排除在外

实际上E8R52y6dD8XI3shXhnhS9pVzUpe2这是user.uid。这是两个用户id组合id"E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2"此组合id存在于数组中。这个数组中将有这么多组合id。我想从所有联合id中排除user.uidE8R52y6dD8XI3shXhnhS9pVzUpe2。如果排除user.uid，则此数组中将保留一个id部分。我想让id值的剩余部分使用。

let userid = E8R52y6dD8XI3shXhnhS9pVzUpe2
let combineId = ["E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2","E8R52y6dD8XI3shXhnhS9pVzUpe26Lh5bHrzCSvI2bmoMv7KuduMGwe2","E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2"]
// this is value what i want
let remainIdinArray = ["6Lf5bHwzCSbI2bmoMv7KuduMGwe2","6Lh5bHrzCSvI2bmoMv7KuduMGwe2","6Lf5bHwzCSbI2bmoMv7KuduMGwe2"]

怎么能做到。感谢

Answer 1

1(您只需循环并用''(空字符串(replace和userId，就会得到您期望的

let userid = "E8R52y6dD8XI3shXhnhS9pVzUpe2";
let combineId = [
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lh5bHrzCSvI2bmoMv7KuduMGwe2",
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",
];
const result = combineId.map((id) => id.replace(userid, ""));
console.log(result);

2(您也可以使用slice、indexOf来获得所需的结果：

let userid = "E8R52y6dD8XI3shXhnhS9pVzUpe2";
let combineId = [
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lh5bHrzCSvI2bmoMv7KuduMGwe2",
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",
];
const result = combineId.map((id) => id.slice(id.indexOf(userid) + userid.length));
console.log(result);

Answer 2

您可以使用贴图和切片！

let userid = "E8R52y6dD8XI3shXhnhS9pVzUpe2";
let combineId = [
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2",
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lh5bHrzCSvI2bmoMv7KuduMGwe2",
"E8R52y6dD8XI3shXhnhS9pVzUpe26Lf5bHwzCSbI2bmoMv7KuduMGwe2"
];

let remainIdinArray = combineId.map((id) => id.slice(-userid.length));

console.log(remainIdinArray);