I have an issue which I dont't really know how to tackle in a good way
I have an array of objects which looks roughly like this:
[
{ name: "horse", newName: "owl" }
{ name: "owl", newName: "horse" }
{ name: "frog", newName: "dog" }
]
I want to remove "mirrored" objects from this array, in result having an array like this:
[
{ name: "frog", newName: "dog" }
]
Basically I need to find objects with opposite keys and values
More complex scenarios:
[
{ name: "horse", newName: "frog" }
{ name: "owl", newName: "horse" }
{ name: "frog", newName: "owl" }
]
// Result: []
[
{ name: "horse", newName: "frog" }
{ name: "dog", newName: "cat" }
{ name: "owl", newName: "horse" }
{ name: "frog", newName: "owl" }
{ name: "monkey", newName: "worm" }
{ name: "cat", newName: "dog" }
]
// Result: [{ name: "monkey", newName: "worm" }]
In the first case I would simply loop through the array and if an object like this is found:
{name: obj1.value2, newName: obj1.value1} I would splice them both
But I have no idea how to approach the more complex situation when 3 or more objects would have to be removed. Any hints?
In advance thanks for your time
you can do it by using filter function on array
var data = [
{ name: "horse", newName: "frog" },
{ name: "dog", newName: "cat" },
{ name: "owl", newName: "horse" },
{ name: "frog", newName: "owl" },
{ name: "monkey", newName: "worm" },
{ name: "cat", newName: "dog" }
];
let noMirrored = data.filter(one => {
return (
!data.some(element => element.name === one.newName) &&
!data.some(element => element.newName === one.name)
);
});
console.log(noMirrored);Use some to check the present value.
var array = [{
name: "horse",
newName: "frog"
},
{
name: "dog",
newName: "cat"
},
{
name: "owl",
newName: "horse"
},
{
name: "frog",
newName: "owl"
},
{
name: "monkey",
newName: "worm"
},
{
name: "cat",
newName: "dog"
}
]
array.forEach(t => {
var nameFound = array.some(a => a.name == t.newName);
var newNameFound = array.some(a => a.newName == t.name);
if (!nameFound && !newNameFound) {
console.log(t);
}
});