javascript - 在字符串javascript中查找数组的第一个索引

Question

这个问题已经有答案了:

How do I check if an array includes a value in JavaScript? (62 个回答)

已关闭 3 年前。

有一个字符串变量，其路径类似于 /app/something/xx/4/profile除此之外还有一个像**这样的字符串数组

const arr=[
     {name:'xx',etc...}, 
     {name:'yy',etc...},
     {name:'zz',etc...}
    ]

我想以最简单的方式找到字符串变量具有名称的数组的第一个索引。

Answer 1

使用Array.findIndex其中:

returns the index of the first element in the array that satisfies the provided testing function. Otherwise, it returns -1, indicating that no element passed the test.

const str = "/app/something/xx/4/profile";

const arr = [{ name: "xx" }, { name: "yy" }, { name: "zz" }];

const index = arr.findIndex(e => str.includes(e.name));

console.log({ index });