当每个数组中的id具有不同类型（字符串，数字）时合并两个数组(Merge two arrays when id in each array is of different type (string,

当每个数组中的id具有不同类型（字符串，数字）时合并两个数组(Merge two arrays when id in each array is of different type (string, number))

使用lodash，当一个数组的id为字符串时，如何通过比较id来合并两个数组，另一个数组的id是否为数字？

var a = [{ id: 1, item: 1 }, { id: 2, item: 2 }, { id: 3, item: 4 }]; var b = [{ id: "1", profile: 1 }, { id: "2", profile: 2 }];

这就是我的尝试。 如果两个数组中的ID都是字符串或两个ID都是数字，则此方法可以正常工作。 添加toString（）或parseInt似乎也不起作用。

return _.map(a, function(obj) { return _.assign(obj, _.find(b, { id: obj.id })); });

Using lodash, how can I merge two arrays by comparing ids when one array has the id as a string, and the other has the id as a number?

var a = [{ id: 1, item: 1 }, { id: 2, item: 2 }, { id: 3, item: 4 }]; var b = [{ id: "1", profile: 1 }, { id: "2", profile: 2 }];

This is what I have tried. This works fine if the ids in both arrays are strings or both ids are numbers. Adding toString() or parseInt doesn't seem to work either.

return _.map(a, function(obj) { return _.assign(obj, _.find(b, { id: obj.id })); });

最满意答案

如何将自定义函数传递给_.find()方法？

return _.map(a, function(obj) { return _.assign(obj, _.find(b, function(o) { return o.id == obj.id; })); });

How about passing a custom function to the _.find() method?

return _.map(a, function(obj) { return _.assign(obj, _.find(b, function(o) { return o.id == obj.id; })); });