带数组的节点红色过滤器数组答案

【问题标题】：node red filter array with array带数组的节点红色过滤器数组
【发布时间】：2021-07-22 07:35:23
【问题描述】：

我有这个节点红色测试设置，我想用一个数组过滤一个对象数组。问题是，测试设置返回原始数组的未过滤副本。我已经发布了另一个关于此的问题，cmets 建议我做的一切都是正确的。这个问题被主持人关闭了。但我的问题仍未解决。

谁能告诉我哪里出错了？

输入数组payload是一个元素数组：

[{"altname":"melon"},{"altname":"cherry"},{"altname":"banana"}]

过滤器数组exclude有2个元素：

[["melon"],["banana"]]

我希望输出数组只有 1 个元素：

[{"altname":"cherry"}]

我的设置：

[{"id":"b4b2e91f.8e4368","type":"inject","z":"42edc0b9.7ba91","name":"","props":[{"p":"payload"},{"p":"exclude","v":"[[\"melon\"],[\"banana\"]]","vt":"json"}],"repeat":"","crontab":"","once":false,"onceDelay":0.1,"topic":"","payload":"[{\"altname\":\"melon\"},{\"altname\":\"cherry\"},{\"altname\":\"banana\"}]","payloadType":"json","x":1650,"y":320,"wires":[["3fbdbc18.951c94"]]},{"id":"3fbdbc18.951c94","type":"function","z":"42edc0b9.7ba91","name":"cycle counter","func":"\n\nmsg.payload = msg.payload.filter(el => !msg.exclude.includes(el.altname));\n\nnode.warn(msg.payload);\nreturn msg;","outputs":1,"noerr":0,"initialize":"","finalize":"","libs":[],"x":1810,"y":320,"wires":[["ab67374c.c64458"]]},{"id":"ab67374c.c64458","type":"debug","z":"42edc0b9.7ba91","name":"","active":true,"tosidebar":true,"console":false,"tostatus":false,"complete":"true","targetType":"full","statusVal":"","statusType":"auto","x":2040,"y":300,"wires":[]}]

除了下面的评论之外，还有我的设置作为描述：

注入节点：

msg.payload = [{"altname":"melon"},{"altname":"cherry"},{"altname":"banana"}]
msg.exclude = [["melon"],["banana"]]

功能节点：

msg.payload = msg.payload.filter(el => !msg.exclude.includes(el.altname));
node.warn(msg.payload);
return msg;

【问题讨论】：

标签： arrays filter node-red

【解决方案1】：

问题在于您的排除数组是二维数组而不是简单的单深度数组。

msg.exclude 应该是：

["melon","banana"]

对于代码你必须正常工作。

【讨论】：