📜  减少javascript代码示例

📅  最后修改于: 2022-03-11 15:02:48.632000             🧑  作者: Mango

代码示例6
//note idx and sourceArray are optional
const sum = array.reduce((accumulator, element[, idx[, sourceArray]]) => {
    //arbitrary example of why idx might be needed
    return accumulator + idx * 2 + element 
}, 0);