vuejs split to string to array

Issue

I've got a string that's formatted in a textbox as comma-separated, however when I try and split it convert it to an array to loop through them I'm getting the error

Type 'string[]' is not assignable to type 'string'

My textbox (using ionic, but essentially just a textarea when rendered

<ion-textarea type="text" v-model="CSVItems" placeholder="e.g. chicken, rice, peas"></ion-textarea>

The data/methods are as follows (cut down to just necessary for the post)

 data() {
    return {
      CSVItems: "",
      myResult: "",
    };
  },
  methods: {
     addItem: function() {
      this.myResult = this.CSVItems.split(",");
  },

Solution

The error is about trying to store an array of strings to a property declared as a string. To inform tslint about the correct type, instantiate myResult as an array of strings:

data: () => ({
  CSVItems: "",
  myResult: [] as string[]
})

Additionally, you might want to also trim before assigning:

this.myResult = this.CSVItems.split(',').map(s => s.trim());

Answered By - tao