过滤掉数组对象中的undined；空数组

qq_40055200

于 2023-01-13 10:40:58 发布

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文章标签： javascript vue.js 开发语言

本文链接：https://blog.youkuaiyun.com/qq_40055200/article/details/128670743

这段代码展示了如何使用JavaScript的filter方法从数组中过滤掉fieldValue为undefined或者为空数组的对象元素，保留具有非undefined且非空数组值的项。

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const arr = [
    {fieldCode: '1',fieldValue:1},
    {fieldCode: '2',fieldValue:2},
    {fieldCode: '3',fieldValue: ['148']},
    {fieldCode: '4',fieldValue: ['66', '68']},
    {fieldCode: '5',fieldValue: undefined},
    {fieldCode: '6',fieldValue: []},
]
const newArr = arr.filter(v  => {
     return (
              v.fieldValue !== undefined &&
              !(Array.isArray(v.fieldValue) && v.fieldValue.length === 0)
            );
})
console.log(newArr)
const arr = [
    {fieldCode: '1',fieldValue:1},
    {fieldCode: '2',fieldValue:2},
    {fieldCode: '3',fieldValue: ['148']},
    {fieldCode: '4',fieldValue: ['66', '68']},
]