const search = ["cat1", "cat2", "cat3"];
const apps = [
{
name: "app1",
categories: ["cat1", "cat5"],
},
{
name: "app2",
categories: ["cat2", "cat4"],
},
  ];

你是这个意思吗？如果是：

var myIndexes = [];

apps.forEach((app, index) => {
search.every((search) => {
  if (app.categories.includes(search)) {
    myIndexes.push(index);
    return false; // return false here is for stoping the EVERY loop
  } else {
    return true; // keep running the EVERY loop
  }
});
});