如何避免循环遍历多个数组

我正在尝试根据 url 传递一个类。目前，2 个 for 循环一直在执行。有没有办法把它写得更干净，以避免执行任何不必要的代码？

const arrCommon = ['foo1', 'foo2', 'foo3', 'foo4'];
const arrOther = ['bar1', 'bar2', 'bar3'];

const activeUrl = window.location.href;
const activePage = activeUrl.substring(activeUrl.lastIndexOf('/') + 1);

for(let i=0; i<arrCommon.length; i++) {
    if (activePage == arrCommon[i])
         //if 'foo1, foo2 foo3 or foo4' add class to element 1
}

for(let i=0; i<arrOther.length; i++) {
    if (activePage == arrOther[i]) {
         //if 'bar1' add class to element 2
         //if 'bar2' add class to element 3
         //...
    }
}

回答

const setCommon = new Set(['foo1', 'foo2', 'foo3', 'foo4']);
const mapOther = new Map(['bar1', el2], ['bar2', el3], ['bar3', el4]]);

const activeUrl = window.location.href;
const activePage = activeUrl.substring(activeUrl.lastIndexOf('/') + 1);

if (setCommon.has(activePage)) {
    ...
}

if (mapOther.has(activePage)) {
    let el = mapOther.get(activePage);
    ...
}