reactjs - Appending React States to another State -


is there proper way append state state in react?

eg. state of have state of cat, dog , fish

    this.state = {        cat:true,       dog:true,       fish:true,       all: cat, dog, fish    }

this have currently:

var chosenanimals = {};   chosenanimals["cat"] = this.state.cat;   chosenanimals["dog"] = this.state.dog;   chosenanimals["fish"] = this.state.fish;

is there better way of doing this?

to push elements in state array need : 

var chosenanimals = []; chosenanimals.push(this.state.cat, this.state.dog, this.state.fish);

if @ array.push (https://developer.mozilla.org/en-us/docs/web/javascript/reference/global_objects/array/push) returns length, in code provided chosenanimals contain 3 , not array looking for. calling push on array , not assigning (or itself) add items array.


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