javascript - Filter an array of objects to only have the last occurrence of that object with the same certain property -


how filter array of objects have last occurrence of object same prop of foo? i.e

given:

[ {foo:1,id:1}, {foo:1,id:2}, {foo:2,id:3} ]

i want back:

[ {foo:1,id:2}, {foo:2,id:3}

i'm using es6 can start here:

 this.data.filter((item,index,self)=> {      return self.findindex(o => o.foo === item.foo);     }) 

var index = {}; var data = [{foo:1,id:1},{foo:1,id:2},{foo:2,id:3}];  data.foreach(item => index[item.foo] = item);  index[1]; // {foo:1,id:2}  object.values(index) // [{foo:1,id:2},{foo:2,id:3}]

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