[Vuejs]-VueJS2 – computed property/method is setting Vue.data?

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I expect your problem here is with getParams. As written, getParams will return an object where the bioinformatics is passed by reference. In other words, params.bioinformatics and data.bioinformatics are pointers to the same array. So, when you modify params.bioinformatics, you see the behavior you are logging. Instead, you might get your bioinformatics property as a copy rather than a reference.

getParams: function () {
  return {
    organism:           this.organism,
    species_id:         this.speciesID,
    bioinformatics:     this.bioinformatics.slice(),
    // ... more params
  }
}
👤Bert

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