变相跳出forEach循环

forEach抛出异常跳出循环

const list = [1, 2, 3, 4, 5, "a", "b", "c", "d", "e"];
try {
    list.forEach((itm) => {
        if (itm === "c") {
            throw new Error("exit");
        }
        console.log(itm);
    });
} catch (e) {
    // console.log(e);
}

splice变相跳出循环

const list = [1, 2, 3, 4, 5, "a", "b", "c", "d", "e"];
Object.assign(list).forEach((itm, idx, arr) => {
    if (itm == "c") {
        arr.splice(idx, arr.length - idx);
    }
    console.log(itm);
});